News and press releases 2018

  • <p>Prof. Dr. Andrea Denker is the head of the department "Proton Therapy" at HZB. Photo: HZB/ M. Setzpfandt</p>16.10.2018

    Andrea Denker is Professor of "Accelerator Physics for Medicine"

    The Beuth Hochschule für Technik Berlin and the Helmholtz-Zentrum Berlin (HZB) have appointed Prof. Dr. Andrea Denker to the joint professorship "Accelerator Physics for Medicine" as of October 1, 2018. Since 2006, Andrea Denker is head of the department "Proton Therapy" at the HZB, which operates the accelerator for eye tumor therapy. The therapy, offered in cooperation with the Charité - Universitätsmedizin Berlin and the HZB, is unique in Germany. [...].

  • <p>The STM image shows blue phosphorus on a gold substrate. The calculated atomic positions of the slightly elevated P atoms are shown in blue, the lower lying ones in white. Groups of six elevated P atoms appear as triangles. Credit: HZB</p> <p><strong>&nbsp;</strong></p>15.10.2018

    Blue phosphorus - mapped and measured for the first time

    Until recently, the existence of "blue" phosphorus was pure theory: Now an HZB team was able to examine samples of blue phosphorus at BESSY II for the first time and confirm via mapping of their electronic band structure that this is actually this exotic phosphorus modification. Blue phosphorus is an interesting candidate for new optoelectronic devices. The results have been published in Nano Letters. [...].

  • <p>John Uhlrich, Editor-in-Chief at Wiley VCH presented an award to Quentin Jeangros, EPFL, and Eike K&ouml;hnen, HZB, for their outstanding posters (from left to right).&nbsp; Credit: group Steve Albrecht/HZB</p>12.10.2018

    Poster award for HZB PhD student

    Eike Köhnen received an award for his poster on perovskite silicon tandem cells at the 4th International Conference on Perovskite Solar Cells and Optoelectronics (PSCO) in Lausanne, Switzerland. He is a PhD student in the Junior Research Group on Perovskite Tandem Cells led by Dr. Steve Albrecht. [...].

  • 10.10.2018

    Am 15. Oktober startet die Ringvorlesung der Freien Universität Berlin– Zum Gedenken an Lise Meitner

    (german)

    Lise Meitner ist eine der bedeutendsten Wissenschaftlerinnen des 20. Jahrhunderts. Die Freie Universität Berlin würdigt im Rahmen einer Ringvorlesung die Leistungen Lise Meitners und arbeitet deren Bedeutung für die Wissenschaft und Kultur auf. Die Veranstaltung findet immer montags von 18.15 bis 19.45 Uhr statt, Beginn ist am 15. Oktober. [...].

  • <p>The theory group with Joe Dzubiella. Credit: HZB</p>08.10.2018

    Collaboration between HZB and the University of Freiburg

    Through a Joint Research Group entitled “Simulation of Energy Materials“ Prof. Joachim Dzubiella of the Albert-Ludwigs-Universität, Freiburg will be able to continue his collaboration with the HZB. The theoretical physicist headed the “Theory and Simulation“ group at the HZB until recently and worked closely together with colleagues conducting experimental research. The new research group will concentrate on electrochemical energy storage and solar fuels. [...].

  • <p>Principle of a silicon singlet fission solar cell with incorporated organic crystalls<br />Credit: M. K&uuml;nsting/HZB</p>02.10.2018

    HZB researchers boost the efficiency of silicon solar cells

    The efficiency of a solar cell is one of its most important parameters. It indicates what percentage of the solar energy radiated into the cell is converted into electrical energy. The theoretical limit for silicon solar cells is 29.3 percent due to physical material properties. In the journal Materials Horizons, researchers from Helmholtz-Zentrum Berlin (HZB) and international colleagues describe how this limit can be abolished. The trick: they incorporate layers of organic molecules into the solar cell. These layers utilise a quantum mechanical process known as singlet exciton fission to split certain energetic light (green and blue photons) in such a way that the electrical current of the solar cell can double in that energy range. [...].

  • <p>Shown are the magnetic fluxlines inside a superconducting sample of lead in two different directions. The scale bar is 5 mm. Credit: HZB</p>02.10.2018

    Neutrons scan magnetic fields inside samples

    With a newly developed neutron tomography technique, an HZB team has been able to map for the first time magnetic field lines inside materials at the BER II research reactor. Tensorial neutron tomography promises new insights into superconductors, battery electrodes, and other energy-related materials. [...].

  • <p>The computer simulation shows how the electromagnetic field is distributed in the silicon layer with hole pattern after excitation with a laser. Here, stripes with local field maxima are formed, so that quantum dots shine particularly strongly. Picture. C. Barth/HZB</p>28.09.2018

    Machine learning helps improving photonic applications

    Photonic nanostructures can be used for many applications, not just in solar cells, but also in optical sensors for cancer markers or other biomolecules. A team at HZB using computer simulations and machine learning has now shown how the design of such nanostructures can be selectively optimised. The results are published in Communications Physics. [...].


Archived news

  • <p>Milena Meschenmoser completed the best apprenticeship of her year. After finishing her training as a precision mechanic, she now has new plans.</p>28.09.2018

    Berlin’s best apprentice for precision mechanic comes from the HZB

    Milena Meschenmoser completed her apprenticeship as a precision mechanic as the best in Berlin. From 2014 to 2018, she completed the practical part of her training at the HZB workshop in Wannsee. [...].

  • <p>Photo: HZB/J. Bierbaum</p>28.09.2018

    Scientific delegation from China visited the HZB

    On 28 September 2018, a 25-member delegation from China gathered information about materials research at the Helmholtz Centre Berlin. Representatives from various research institutes, universities and industrial companies visited the Lise-Meitner Campus in Wannsee and had discussions with the HZB researchers. [...].

  • 24.09.2018

    Atoosa Meseck is a professor of accelerator physics at the University of Mainz

    On 1 September 2018, Johannes Gutenberg University Mainz appointed Atoosa Meseck to the joint professorship “Accelerator physics – collective effects and nonlinear beam dynamics”. Prof. Dr. Atoosa Meseck is researching at HZB into novel concepts for undulators, as are indispensable for producing high brightness synchrotron radiation. Among other things, she is developing undulator concepts for the successor facility BESSY III, for which the concept is currently being developed at HZB. [...].

  • <p>Monthly news from HZB - via email newsletter.</p>24.09.2018

    Newsletter and Highlightreport

    Exactly twenty years ago, BESSY II went into operation. In the current September newsletter, which we are sending out this week, we present the anniversary website, report on the new highlight report 2017 and on successes in technology transfer. Have you already registered for the newsletter? Here is the registration link. [...].

  • <p>A heavy-duty crane lifted the undulator from the testing hall onto a truck, which transported it to the truck sluice of the experimental hall. Picture: HZB/S.Zerbe</p>21.09.2018

    Spectacular transport: Undulator moved to the electron storage ring BESSY II

    A worldwide unique undulator developed at Helmholtz-Zentrum Berlin (HZB) was installed in the storage ring BESSY II on September 20, 2018. It supplies the "Energy Materials In-Situ Lab EMIL" with the hard X-ray light from BESSY II. The transport of the six-ton device was spectacular: several cranes were used to transport the undulator just a few hundred meters from the production building to the storage ring. [...].

  • <p>The nanostructure for capturing light is imprinted on silicon oxide (blue) and then "levelled" with titanium oxide (green). The result is an optically rough but smooth layer on which crystalline silicon can be grown. Picture: HZB</p>17.09.2018

    Patented nanostructure for solar cells: Rough optics, smooth surface

    Thin-film solar cells made of crystalline silicon are inexpensive and achieve efficiencies of a good 14 percent. However, they could do even better if their shiny surfaces reflected less light. A team led by Prof. Christiane Becker from the Helmholtz-Zentrum Berlin (HZB) has now patented a sophisticated new solution to this problem. [...].

  • <p>Alejandra Villanueva Tovar, Pavlo Perkhun, Erin Looney, Tom Veeken, Gizem Birant, Harald Reinhold (from left) have been awarded with an HQCQ 2018. Credit: HZB</p>09.09.2018

    Hanwha Q-Cells Quantsol Awards 2018

    Six young researchers received a Hanwha Q-Cells Quantsol Award for their self-developed Photovoltaics. This award is presented by the organizers of the international summer school Quantsol together with the industry. [...].

  • 04.09.2018

    Neue HZB-Zeitung „lichtblick“ erschienen

    (german)

    Das Potenzial der Solarenergie ist längst nicht ausgereizt. Es gibt viele Stellschrauben, um den Wirkungsgrad weiter zu erhöhen. So beschichtet Christiane Becker Gläser mit winzigen Strukturen, um den Lichteinfang in Solarzellen zu erhöhen – eine Technologie, die für die Industrie höchst interessant ist. In der Titelgeschichte der neuen "lichtblick" stellen wir die Physikerin vor, die sich beinahe für eine Laufbahn als Musikerin entschieden hätte. Bis sie auf das Thema der Erneuerbaren Energien stieß. [...].

  • 03.09.2018

    The HZB welcomes new apprentices and students

    On September 3, 2018, 14 new colleagues who are undertaking an apprenticeship, a dual course of study or a voluntary scientific year at the HZB officially started their careers. [...].

  • <p>HZB/P. Dera</p>29.08.2018

    Invitation to the final presentations of HZB Summer Students on 30th August

    The HZB summer students worked on their own research projects for eight weeks. August 30th is their last day at HZB. We cordially invite you to the final presenation event at Campus Wannsee. Three selected students will give a lecture on their research projects. Afterwards, the students will be glad to report on the results and progress of their work in a poster session. Just drop by without registering - we look forward to seeing you! [...].

  • <p>Anja Karliczek, Federal Minister of Education and Research, visited the HZB student laboratory exhibit. Photo: BMBF</p>27.08.2018

    Shaking hands and experimenting with the Federal Research Minister

    Federal Research Minister Anja Karliczek visited the tent of the school laboratories in the Helmholtz Association at the German government's Open Day this weekend. Employees of the Alfred Wegener Institute, DESY and HZB experimented with the visitors at the invitation of the BMBF. "We have two great days behind us with interesting encounters, curious children and lots of action," says Dr. Ulrike Witte from the HZB school laboratory. [...].

  • <p>View into the new HySPRINT laboratory at HZB, where perovskit solar cells can be produced and tested. Photo: HZB/M. Setzpfandt</p>24.08.2018

    2.8 Mio Euro Funding for preparing perovskite solar cells for high volume manufacturing

    HZB participates in a new consortium for Perovskite solar technology that is led by Oxford PV Germany GmbH. The consortium is funded by the German Ministry of Economics and Energy with 2.8 Million Euros and aims to further demonstrate the manufacturability of perovskite-silicon tandem solar cells. [...].

  • <p>The HySPRINT logo (Helmholtz Innovation Lab) printed on a copper solution symbolizes how the thinnest material layers can be produced simply and cost-effectively. Possible applications are solar cells, organic LEDs or transistors. Photo credit: Humboldt Universit&auml;t zu Berlin/List-Kratochvil &nbsp;</p>22.08.2018

    Printing solar cells and organic LEDs

    Humboldt-Universität zu Berlin and Helmholtz-Zentrum Berlin form a joint lab and research group “Generative production processes for hybrid components”.

    Solar cells, LEDs and detectors made of organic and hybrid semiconductors can nowadays be simply printed out, even together with teensy nanostructures that make them function better. The development of low-cost printing methods for electronic and optoelectronic components is at the centre of things for the new joint research group and the joint laboratory of the Helmholtz-Zentrum Berlin (HZB) and Humboldt-Universität zu Berlin (HU). [...].

  • <p>The laser pulse (red) generates heat in the thin-film system. The physical mechanisms by which the heat is distributed can be analysed by temporally resolved X-ray diffraction experiments. Credit: HZB/University Potsdam</p>21.08.2018

    Future information technologies: nanoscale heat transport under the microscope

    A team of researchers from the Helmholtz-Zentrum Berlin (HZB) and the University of Potsdam has investigated heat transport in a model system comprising nanometre-thin metallic and magnetic layers. Similar systems are candidates for future high-efficiency data storage devices that can be locally heated and rewritten by laser pulses (Heat-Assisted Magnetic Recording). Measurements taken with extremely short X-ray pulses have now shown that the heat is distributed a hundred times slower than expected in the model system. The results are published in Nature Communications. [...].

  • 14.08.2018

    Register now: Newsletter from HZB

    On Thursday evening we will send out the next newsletter with information from the HZB. The focus topic in August is BESSY II and the expansion to BESSY VSR. According to the new data protection guidelines, we may only send the newsletter to persons who have registered. And what about you? Did you just subscribe? Here is the registration link. [...].

  • 10.08.2018

    Summer in the lab - and in the HZB science blog

    They come from Egypt, China, Mexico or Russia and study science or technology in Bachelor's or Master's degrees. For eight weeks our summer students participate in research in an HZB team. But are they doing exactly? They are currently blogging about their projects in the HZB-Scienceblog. [...].

  • <p>Granules of aluminium (grey) become a metallic foam when heated.The tompgraphies document the evolution of pores with time. Credit: HZB</p>08.08.2018

    World record: Fastest 3D tomographic images at BESSY II

    An HZB team has developed an ingenious precision rotary table at the EDDI beamline at BESSY II and combined it with particularly fast optics. This enabled them to document the formation of pores in grains of metal during foaming processes at 25 tomographic images per second - a world record. [...].

  • <p>The analysed perovskite cell has a surface of 1 cm<sup>2</sup>. Credit. Uni Potsdam</p>01.08.2018

    Insight into loss processes in perovskite solar cells enables efficiency improvements

    In perovskite solar cells, charge carriers are mainly lost through recombination occurring at interface defect sites. In contrast, recombination at defect sites within the perovskite layer does not limit the performance of the solar cells at present. Teams from the University of Potsdam and the Helmholtz-Zentrum Berlin (HZB) were able to reach this interesting conclusion through extremely accurate quantitative measurements on 1 cm2 perovskite cells using photoluminescence. Their results contribute to improving  perovskite solar cells and have now been published in Nature Energy. [...].

  • <p>Manganese compounds also play a role as catalysts in photosynthesis. Credit: HZB</p>31.07.2018

    Insight into catalysis through novel study of X-ray absorption spectroscopy

    An international team has made a breakthrough at BESSY II. For the first time, they succeeded in investigating electronic states of a transition metal in detail and drawing reliable conclusions on their catalytic effect from the data. These results are helpful for the development of future applications of catalytic transition-metal systems. The work has now been published in Chemical Science, the Open Access journal of the Royal Society of Chemistry. [...].

  • <div id="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d" class="infowindow_7baf4b2e2c_2d5f6a_2d11d2_2d8f20_2d0000c0e166dc_7d infoValueContainer"> <div class="readOnlyInfoValue">The experimental Hall of BESSY II. HZB / D.Butensch&ouml;n&nbsp;</div> </div>30.07.2018

    Shutdown BESSY II: work has started

    As of 30 July 2018, BESSY II will be down for several weeks. In the summer shutdown, important components in the storage ring tunnel will be replaced and overhauled. The first conversion work for the BESSY VSR project also begins. Upgrading BESSY II into a variable-pulse-length storage ring (BESSY-VSR) will provide unique experimental conditions for researchers worldwide. The shutdown lasts until 30 September 2018, and user operation will recommence on 30 October 2018. [...].

  • <p>Antonio Abate is an internationally renowned perovskite researcher. Image: J. B&ouml;hm/HZB</p>27.07.2018

    ERC Starting Grant awarded to Antonio Abate

    HZB scientist Dr. Antonio Abate has been awarded an ERC Starting Grant for his research project on perovskite solar cells. The ERC Starting Grant supports outstanding researchers in an early phase of their scientific careers with up to 1.5 million euros over five years and is considered one of the most important European awards. [...].

  • 26.07.2018

    HZB Newsletter in english now

    You can now register to receive the monthly HZB Newsletter automatically by email. It always contains two or three science features from research activities, information on personnel matters, and video and reading tips such as links to profiles and news reports from the HZB newspaper Lichtblick, the Campus Blog, and the Science Blog. [...].

  • <div class="ce__subline ce__subline--black font--h7">&Uuml;bergabe der Technologieberichte an den parlamentarischen Staatssekret&auml;r Thomas Barei&szlig; (BMWi) durch Prof. Dr.-Ing. Manfred Fischedick und Dr. Peter Viebahn, (Wuppertal Institut) sowie Prof. Dr. Martin Wietschel (Fraunhofer ISI) und Juri Horst (IZES gGmbH). Quelle: Susanne Eriksson/BMWi</div> <div class="ce__data-full"></div>26.07.2018

    Wissenstransfer: Neues Standardwerk zu Energietechnologien in Deutschland

    (german)

    Vertreter des Wuppertal Instituts haben dem Bundesministerium für Wirtschaft und Energie (BMWi) einen mehrbändigen Bericht zu Energietechnologien übergeben. Dabei haben Experten aus dem HZB-Institut PVcomB am Themenfeld Photovoltaik mitgewirkt. Im Herbst verabschiedet die Bundesregierung das neue 7. Energieforschungsprogramm (EFP). Der Bericht liefert eine wissenschaftliche Basis für die Entwicklung des Programms.  [...].

  • <p>With this experiment, the team could observe how magnetic order is changed by sudden heat.</p>16.07.2018

    Future information technology: Microscopic insight into processes when magnets suddenly heat up

    Magnetic solids can demagnetize upon heating. Despite decades of research, it has so far been unclear how this process works in detail. Now, for the first time, an international group has observed in a step-by-step manner how sudden heating affects the magnetic order of a ferrimagnetic insulator on two different time scales. The work is published in Science Advances. [...].

  • <p>Katherine Ann Mazzio was awarded for her poster contribution at the ICT2018 in Caen.</p>15.07.2018

    Poster award für HZB scientist at ICT2018

    At the International Conference on Thermoelectrics in July in Caen, France, Dr. Katherine Ann Mazzio from the HZB Institute of Nanospectroscopy received a prize for her poster. The conference is the world's largest symposium on thermoelectric materials. [...].

  • <p><strong></strong><strong>Weitere Informationen finden Sie hier: <a href="https://bvmatwerk.de">https://bvmatwerk.de</a></strong></p>13.07.2018

    Bundesvereinigung Material- und Werkstoffwissenschaften wählt Susan Schorr zur Generalsekretärin

    (german)

    Auf der letzten Mitgliederversammlung der Bundesvereinigung Material- und Werkstoffwissenschaften (BVMatWerk) wurde Prof. Dr. Susan Schorr einstimmig zur Generalsekretärin gewählt. Sie tritt das Amt ab 2019 an, die Amtszeit dauert zwei Jahre. [...].

  • <p>Participants from partner institutions at the GRECO kick off in Madrid on 25. June 2018.</p>11.07.2018

    GRECO kick-off in Madrid: advancing photovoltaics through “open science”

    The Helmholtz-Zentrum Berlin (HZB) is one of ten international partners in the GRECO pilot project funded under the European Union framework programme Horizon 2020. They intend to jointly test OpenScience approaches for exchanging knowledge and research data in order to accelerate the development of innovative PV products worldwide. GRECO will receive three million euros in funding through 2021. [...].

  • <p>The homepage: <a href="http://grafox.pdi-berlin.de/">http://grafox.pdi-berlin.de/</a></p>10.07.2018

    HZB expert contributes to Leibniz platform GraFOx

    The platform "GraFOx" of the Leibniz Association bundles the activities and competences of Berlin research institutes and universities in the field of oxide research for electronic applications. Now Prof. Dr. Catherine Dubourdieu has been involved as an Associate Partner. The internationally renowned expert heads the Institute "Functional Oxides for Energy-Efficient Information Technology" at the Helmholtz-Zentrum Berlin. [...].

  • <p>Nils M&aring;rtensson, University of Uppsala, cooperates closely with HZB.<strong><br /></strong></p>09.07.2018

    Helmholtz International Fellow Award for Nils Mårtensson

    The Helmholtz Association has presented the Swedish physicist Nils Mårtensson with a Helmholtz International Fellow Award.  The synchrotron expert of the University of Uppsala, who heads the nobel comitee for physics, cooperates closely with the HZB-Institute Methods and Instrumentation for Synchrotron Radiation Research. [...].

  • <p>21 students from all over the world will work on their research projects during summer at HZB. Credit: S. Kodalle/HZB</p>09.07.2018

    Summer in the laboratory: 21 summer students start their research project at the HZB

    Young people from all over the world have applied to the Helmholtz Centre to take part in the annual summer programme: eight weeks of research in an HZB team, well supervised, taking their first steps in their own scientific work. Now 21 students from eleven countries have arrived and are looking forward to their research project.  They will present their results on 30 August. [...].

  • <p>Zum <a href="http://www.spektrum.de/aktion/energiewende" class="Extern">Download des Spektrum Kompakt</a></p>05.07.2018

    Kostenloser Download: HZB-Forschung in Spektrum Kompakt

    (german)

    Noch bis zum 9. Juli steht das Spektrum Kompakt "Energiewende", herausgegeben vom Spektrum-Verlag zum kostenlosen Download zur Verfügung. Darin enthalten ist eine 13-seitige Sonderveröffentlichung des HZB, aufgeteilt in drei Beiträge. Nach Ablauf des kostenlosen Zugangs wird der Download des Hefts auf den Spektrum-Seiten 4,99 € kosten. [...].

  • <p>The transparent anti-corrosion layer contains Rhodium nanoparticles as a catalyst. Credit ACS Energy Letters.</p>05.07.2018

    New world record for direct solar water-splitting efficiency

    Hydrogen will play a central role as a storage medium in sustainable energy systems. An international team of researchers has now succeeded in raising the efficiency of producing hydrogen from direct solar water-splitting to a record 19 per cent. They did so by combining a tandem solar cell of III-V semiconductors with a catalyst of rhodium nanoparticles and a crystalline titanium dioxide coating. Teams from the California Institute of Technology, the University of Cambridge, Technische Universität Ilmenau, and the Fraunhofer Institute for Solar Energy Systems ISE participated in the development work. One part of the experiments took place at the Institute for Solar Fuels in the Helmholtz-Zentrum Berlin. [...].

  • <p>Certificate ceremony in Berlin: Family Minister Dr. Franziska Giffey and the managing directors of the non-profit Hertie Foundation and berufundfamilie Service GmbH presented the award. Photo: berufundfamilie, Thomas Ruddies / Christoph Petras</p>29.06.2018

    Helmholtz Zentrum Berlin receives "audit berufundfamilie" certificate

    On 27 June 2018 in Berlin, the HZB was awarded the "audit berufundfamilie" certificate for its strategically designed family and life-phase conscious personnel policy. The certificate was presented to Anja Seehrich, the person responsible for work-life-balance at HZB, by the Federal Minister for Family Affairs, Dr. Franziska Giffey. [...].

  • <p>PhD students Hannes Hempel and Sara Niedenzu have earned awards at the E-MRS 2018.&nbsp;</p> <p></p>28.06.2018

    E-MRS: Prizes for two PhD students at HZB

    At the spring meeting of the European Materials Research Society from 18-22 June 2018 in Strasbourg, Hannes Hempel received the prize for the best talk and Sara Niedenzu was awarded for her poster. Both are PhD students at the MatSEC graduate school at HZB. The E-MRS spring conference is the largest materials research conference in Europe with 2,500 participants. [...].

  • <p>Ra&uuml;l Garcia Diez is awarded the poster prize. Photo: SRI 2018</p>26.06.2018

    Dr. Raül Garcia Diez received poster award at the international synchrotron conference SRI 2018

    HZB researcher introduces unique operando characterization by soft X-ray spectroscopy

    The HZB physicist Raül Garcia Diez has been awarded a poster prize at the international conference "Synchrotron Radiation Instrumentation 2018" (SRI 2018) in Taiwan. He presented how the HZB team intends to observe the reactions in electrocatalysts under "operando" conditions with soft X-rays from BESSY II. [...].

  • 26.06.2018

    HZB Newsletter with monthly highlights and info on events

    You can now register to receive the monthly HZB Newsletter automatically by email. It always contains two or three science features from research activities, information on personnel matters, and video and reading tips such as links to profiles and news reports from the HZB newspaper Lichtblick, the Campus Blog, and the Science Blog. [...].

  • 22.06.2018

    Silicon heterojunction solar cell with a certified 23.1 % energy conversion efficiency

    After further optimization of the baseline process for industrial silicon heterojunction (SHJ) solar cells, the accredited metrology lab ISFH CalTeC now certified an efficiency of 23.1 % for a 4 cm² solar cell. This performance is among the best in the world and demonstrates the leading role of HZB in this technology in Germany and Europe.

    [...].

  • <p>Maxi W., 6 years old, is happy about her homemade spectroscope, which she could take home with her.</p>21.06.2018

    Day of the Little Researchers: 150 daycare children experiment at the HZB

    Why is the light white? And the sky blue? Children ask many questions and want to try things out. For this purpose, 150 pre-school children had many opportunities at the "Day of the Little Researchers" in the HZB school lab. They used self-made spectroscopes to examine the colours of light. [...].

  • 14.06.2018

    Helmholtz Association supports ATHENA with 29.99 mio. euro grant

    ATHENA (“Accelerator Technology HElmholtz iNfrAstructure”) is a new research and development platform focusing on accelerator technologies and drawing on the resources of all six Helmholtz accelerator institutions (DESY, Jülich Research Centre, Helmholtz Centre Berlin, Helmholtz Centre Dresden-Rossendorf HZDR, KIT and GSI with the Helmholtz Institute of Jena). The Helmholtz Association has now decided to pay almost 30 million euros towards ATHENA as a strategic development project. [...].

  • <p>Perovskite-based tandem solar cells can achieve now efficiencies better than 25%. Credit: HZB</p>14.06.2018

    Perovskite-silicon solar cell research collaboration hits 25.2% efficiency

    A 1 cm2 perovskite silicon tandem solar cell achieves an independently certified efficiency of 25.2 %. This was presented this week at an international conference in Hawaii, USA. The cell was developed jointly by HZB, Oxford University and Oxford PV - The Perovskite CompanyTM. [...].

  • <p>Semi transparent PV-elements in the train station in Perpignan, France. Credit: CC 3.0/Issolsa</p>13.06.2018

    Alliance Building Integrated Photovoltaics: Björn Rau joins Management Board

    The General Meeting of Alliance for Builiding Integrated Photovoltaics (BIPV) has unanimously elected physicist and photovoltaic expert Dr. Björn Rau, Helmholtz-Zentrum Berlin, to the BIPV Management Board. [...].

  • 12.06.2018

    HZB experts present cooperation opportunities at Intersolar Europe in Munich

    The international exhibition “Intersolar” brings photovoltaic research and the solar industry together. It is a perfect opportunity for researchers from Helmholtz-Zentrum Berlin to present thin-film photovoltaic technologies and projects, including for example perovskite solar cells and tandem solar cells. [...].

  • 11.06.2018

    Record number of visitors to the Long Night of Sciences at HZB in Adlershof

    4,700 visitors came to see the electron accelerator BESSY II and the energy laboratories and experimental stations dedicated to researching solar energy. That makes nearly 20 percent more interested visitors to HZB’s Adlershof campus than last time. [...].

  • <p>Prof. Sir Richard Friend will give a talk at HZB (Photo: Patrik Tschudin, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=12405490).</p>07.06.2018

    The pioneer of organic semiconductor electronics will be a guest speaker at Helmholtz-Zentrum Berlin

    On 14 June, Prof. Sir Richard Friend will be giving a talk in the auditorium of BESSY II on the physics that made the breakthroughs in organic electronics possible.

    He is one of the most renowned researchers in the field of organic semiconductor physics: Prof. Sir Richard Friend of the University of Cambridge. Organic semiconductors are in high demand, given that they can be affordably printed over large surface areas. They are already being used, among other things, in smartphone displays, as photovoltaic diodes and as field effect transistors (FETs). Prof. Sir Richard Friend will be giving a talk about the physics that led to these breakthroughs in organic semiconductor technology at the Photovoltaic Colloquium at HZB on the 14th of June 2018.

    [...].

  • <p>Alle Fotos: HZB/P.Dera</p>05.06.2018

    Hereinspaziert: Helmholtz-Zentrum Berlin öffnet zur Langen Nacht der Wissenschaften BESSY II und Energieforschungslabore

    (german)

    Solarzellen, die hocheffizient, sehr preiswert und lange haltbar sind. Wasserstoff, der mit Sonnenenergie gewonnen wird und Autos antreibt. Computer, die mit geringstem Energieverbrauch riesige Datenmengen verarbeiten: Die Forscherinnen und Forscher des Helmholtz-Zentrum Berlin arbeiten daran, dass diese Zukunftsvisionen Realität werden. Zur Langen Nacht der Wissenschaften am 9. Juni 2018 öffnen sie ihre Labore in Adlershof, stellen ihre Arbeit vor und laden zum Experimentieren ein. [...].

  • <p>Fossils like this 250 million year old skull of a lystrosaurus can be examined very carefully by neutron tomography. Credit: MfN Berlin</p>05.06.2018

    Neutron tomography: Insights into the interior of teeth, root balls, batteries, and fuel cells

    A team of researchers at Helmholtz-Zentrum Berlin (HZB) and European Spallation Source (ESS) has now published a comprehensive overview of neutron-based imaging processes in the renowned journal Materials Today (impact factor 21.6). The authors report on the latest developments in neutron tomography, illustrating the possible applications using examples of this non-destructive method. Neutron tomography has facilitated breakthroughs in so diverse areas such as art history, battery research, dentistry, energy materials, industrial research, magnetism, palaeobiology and plant physiology. [...].

  • <p>Photo: HZB/P. Dera</p>31.05.2018

    Thorsten Kamps is Professor of Accelerator Physics at Humboldt-Universität zu Berlin

    On 24 May 2018, Humboldt-Universität zu Berlin (HUB) and Helmholtz-Zentrum Berlin (HZB) jointly appointed Thorsten Kamps to the Professorship of “Accelerator physics – Generation and Characterisation of High Brightness Electron Beams”. Kamps heads a workgroup at the Institute for Accelerator Physics of HZB. He and his team develop a key component for new accelerator facilities, namely high brightness electron sources. [...].

  • 30.05.2018

    Neue HZB-Zeitung „lichtblick“ erschienen

    (german)

    In den letzten Wochen ist viel passiert am HZB: das Beschleunigerteam hat einen neuen Betriebsmodus erfolgreich getestet, eine Begleitgruppe zum Rückbau des Forschungsreaktors hat ihre Arbeit aufgenommen – und es gibt jetzt eine Energiemanagerin am HZB. Das sind nur einige Themen, über die wir berichten. [...].

  • 30.05.2018

    Start of a several-year approval process

    HZB submits its letter of intent to have the last fuel elements from the research reactor BER II stored in Ahaus.

    The Berlin experimental reactor BER II of Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) will be shut down at the end of 2019. The current fuel elements are still producing neutrons, but the plan is that, after they are shut down and allowed to rest for a decay period of several years, they will be brought to the interim storage site Ahaus for intermediate storage. Deposition at the interim storage site requires official approval from the Federal Office for the Safety of Nuclear Waste Management (BfE). HZB is already submitting a letter of intent to start the approval process now, which will likely also take many years. It is not expected the fuel elements will be able to be transported to Ahaus before 2023. [...].

  • <p>Prof. Dr. Rutger Schlatmann</p>18.05.2018

    "Tandemtechnologie" - Wie die Produktion von Solarzellen nach Europa zurückkehren könnte

    (german)

    Der Direktor des PVcomB am HZB im Interview des pv magazine

    "Das Potenzial der Photovoltaik ist nicht mal annähernd ausgereizt", sagt Rutger Schlatmann im Interview. So liege der Wirkungsgrade bei kommerziellen Modulen aktuell bei zirka 20 Prozent. Mit Tandem-Solarmodulen wären bis zu 40 Prozent möglich - und sie ließen sich wahrscheinlich auch wirtschaftlich produzieren. Schlatmann zeigt die Vorteile der Dünnschicht- und der Wafer-Technologie auf und wagt eine Prognose: Welche Technologie wird das Rennen machen? Und unter welchen Bedingungen könnte die Photovoltaik-Produktion nach Deutschland zurückkehren? Lesen Sie mehr im Interview des pv magazine. [...].

  • <p>First author is the mathematician Sibylle Bergmann, whose PhD work is funded by MiCo. Credit: WIAS</p>17.05.2018

    Helmholtz Virtual Institute MiCo: Article selected as journal highlight for 2017

    The Helmholtz Virtual Institute MiCob offers a platform through which the Helmholtz-Zentrum Berlin conducts joint research with universities and other partners on the topic of microstructures for thin-film solar cells. The journal Modelling and Simulation in Materials Science and Engineering recently selected an article produced through MiCo as the highlight of those published by the journal during 2017. [...].

  • <p>CIGS-Solarzellen sind auch am HZB ein wichtiges Forschungsgebiet. Bild: A.Kubatzki/HZB</p>07.05.2018

    Internationaler Workshop zu CIGS-Dünnschicht-Solarmodulen am 18. Juni 2018 in Stuttgart

    (german)

    Dünnschicht-Solarmodule mit einem Halbleiter aus Kupfer, Indium, Gallium und Selen (CIGS) machen derzeit große Fortschritte bei der kommerziellen Fertigung. Welche Verbesserungen die Industrie in den letzten Jahren erzielt hat, wo die CIGS-Dünnschichttechnologie heute steht und was künftig noch erreichbar ist, diskutieren internationale Experten am 18. Juni 2018 auf dem neunten Workshop IW-CIGSTech in Stuttgart. Veranstaltet wird der jährlich stattfindende Austausch vom Zentrum für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg (ZSW) und dem Helmholtz-Zentrum Berlin für Materialien und Energie (HZB). Der Workshop richtet sich an Fachleute aus Wissenschaft, Technik und Industrie. [...].

  • <p>After two years of postdoctoral research at HZB, Dr. Charles Hages has received an appointment as Assistant Professor at the University of Florida. Credit: C. Hages</p>03.05.2018

    Appointment to University of Florida

    Dr. Charles Hages has received an appointment as Assistant Professor in the Department of Chemical Engineering at the University of Florida. Hages has been a postdoctoral researcher at HZB in the Department of Structure and Dynamics of Energy Materials for two years. At University of Florida, Hages will advance his work in developing energy materials and looks forward to continued collaborations with his HZB colleagues.  [...].

  • 26.04.2018

    "Es war voll super!" - Girls Day & Zukunftstag am HZB

    (german)

    Die Mädchen und Jungen zum Zukunftstag am HZB waren einstimmig begeistert - "Es war voll super!". Genau das Feedback gaben die Schülerinnen und Schüler gestern an die Betreuerinnen und Betreuer weiter. Insgesamt haben über 90 Mädchen und Jungen an den dreizehn verschiedenen Workshops in Adlershof und Wannsee teilgenommen. Neu dabei: Das Team der Augentumortherapie hat sich erstmalig im Rahmen des "Zukunftstag 2018" mit einem ganztägigen Workshop für Mädchen & Jungen beteiligt. [...].

  • <p>The Quantsol will be held from 2. to 9. September 2018 in Hirschegg, Kleinwalsertal, Austria.Credit: K. Lips/HZB<strong><br /></strong></p>26.04.2018

    Registration for Summer School Quantsol is now open!

    It is already the eleventh time that the International Summer School on Photovoltaics and New Concepts of Quantum Solar Energy Conversion (Quantsol) will be held from 2. to 9. September 2018 in Hirschegg, Kleinwalsertal, Austria. The school is organized by the Helmholtz-Zentrum Berlin and the Technical University of Ilmenau. Applications can be submitted through the school’s homepage until May 18th , 2018. [...].

  • <p>More than 50 participants from Israel and Berlin initiated the international research school HI-SCORE with a kick off meeting. Credit: HZB</p>25.04.2018

    HI-SCORE international research school: Kick Off Meeting in Berlin

    The international research school on solar energy promotes exchange between Germany and Israel and excellent conditions for PhD students.

    With a two day kick off meeting at Helmholtz-Zentrum Berlin (HZB) the Helmholtz International Research School HI-SCORE on solar energy research has started. To accomplish this, HZB is collaborating with the Weizmann Institute in Rehovot, the Israeli Institute of Technology (Technion) in Haifa, and three Israeli universities as well as universities in Berlin and Potsdam. The project is funded by the Helmholtz Association.

    [...].

  • <p>The review panel of the research field "Matter" visited the HZB on 11th January 2018.<strong><br /></strong></p> <p>Photo. HZB/J. Bierbaum</p>19.04.2018

    Results of evaluation by international panel of experts: support for HZB’s future, calls for rapid planning of BESSY III

    The Helmholtz-Zentrum Berlin (HZB) has received an evaluation of “excellent” in a review of science programmes undertaken at all Helmholtz Research Centres. This provides the foundation for future financing of HZB.

    Two committees of leading international scientists visited the HZB for a week each at the beginning of this year. They evaluated the HZB's contributions to the Helmholtz programmes in the research areas of “Matter” and “Energy”. Now the written evaluations are available. The team spirit of all employees involved in the HZB was particularly emphasised. [...].

  • <p>Photo: HZB/J.Bierbaum</p>18.04.2018

    A high ranked Chinese delegation led by Mr. Yin, Vice Mayor of Beijing, visited HZB in Adlershof

    On 11 April 2018, the Vice Mayor of Beijing, the Minister Counsellor and the Secretary-General of the Chinese Embassy in Germany paid a visit to Helmholtz-Zentrum Berlin (HZB). The delegation came to learn more about the research topics, infrastructures and user service at HZB. The plan is to establish Beijing as one of three major national innovation centres with large-scale facilities for the international user community. [...].

  • <p>Laser light for writing and erasing information &ndash; a strong laser pulse disrupts the arrangement of atoms in an alloy and creates magnetic structures (left). A second, weaker, laser pulse allows the atoms to return to their original lattice sites (right). Image: Sander M&uuml;nster / HZDR</p>18.04.2018

    Writing and deleting magnets with lasers

    Scientists at the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) together with colleagues from the Helmholtz-Zentrum Berlin (HZB) and the University of Virginia in Charlottesville, USA have found a way to write and delete magnets in an alloy using a laser beam – a surprising effect. The reversibility of the process opens up new possibilities in the fields of material processing, optical technology, and data storage. [...].

  • <p>The magnetosomes form a chain inside the bacteria's cell shows the electron cryotomography (ECT). Credit:10.1039/C7NR08493E</p>16.04.2018

    BESSY II sheds light on how the internal compass is constructed in magnetotactic bacteria

    Bacteria exist in many shapes and with very different talents. Magnetotactic bacteria can even sense the earth’s magnetic field by making use of magnetic nanoparticles in their interior that act as an internal compass. Spanish teams and experts at Helmholtz-Zentrum Berlin have now examined the magnetic compass of Magnetospirillum gryphiswaldense at BESSY II. Their results may be helpful in designing actuation devices for nanorobots and nanosensors for biomedical applications. [...].

  • <p>Foto: HZB/K.Kolatzki</p>10.04.2018

    HZB-Schülerlabor: Jetzt Termine für das 1. Schulhalbjahr 2018/2019 buchen

    (german)

    Die Schülerlabore des HZB in Wannsee und Adlershof sind sehr beliebt. Bis zu 3000 Schülerinnen und Schüler experimentieren pro Jahr zu Themen wie Magnetismus und Supraleitung, Solarenergieforschung und Licht und Farben in der forschungsnahen Umgebung des HZB. Für das neue Schulhalbjahr (August 2018 - Januar 2019) bietet das Schülerlabor 76 Projekttage für Grund- und Oberschulen an. Die Projekttage sind kostenfrei, einige Restplätze können noch gebucht werden. [...].

  • <p class="Default">The picture shows the typical arrangement of cations in a kesterite type structure. In the background the crystal structure is shown, a unit cell is highlighted. Credit: HZB</p>29.03.2018

    Kesterite solar cells: germanium promises better opto-electronic properties than tin

    Specific changes in the composition of kesterite-type semiconductors make it possible to improve their suitability as absorber layers in solar cells. As a team at the Helmholtz-Zentrum Berlin showed, this is particularly true for kesterites in which tin was replaced by germanium. The scientists examined the samples using neutron diffraction at BER II and other methods. The work was selected for the cover of the journal CrystEngComm. [...].

  • 23.03.2018

    New solar solutions for sustainable buildings and cities

    At the Interdisciplinary conference on „INNOVATION IN SOLAR BUILDING SKINS & ENERGY EFFICIENCY TOWARDS SUSTAINABLE CITIES”, 19th to 20th march in Berlin, experts from the building sector, politics, finance and photovoltaics have discussed the implementation of Building Integrated Photovoltaics (BIPV). In a very lively and active workshop, drivers and barriers were identified. [...].

  • 22.03.2018

    LEAPS join forces with the European Commission to strengthen Europe’s leading role in science

    “A world where European science is a catalyst for solving global challenges, a key driver for competitiveness and a compelling force for closer integration and peace through scientific collaboration.” This is the vision of LEAPS, League of European Accelerator-based Photon Sources, on which the LEAPS Strategy 2030 is based. Director Jean-David Malo, DG Research and Innovation, received the strategy today at the Bulgarian Presidency Flagship Conference on Research Infrastructures. [...].

  • 20.03.2018

    HZB has once again been recertified as a family-friendly employer

    Since 2011, HZB has held the “Career and Family” certificate of the non-profit Hertie Foundation. Every three years, HZB’s schemes for balancing work and family/life have to be put under review. In March 2018, independent reviewers confirmed that HZB is still a certified family-friendly employer. [...].

  • <p>Dr. Nele Thielemann-K&uuml;hn was awarded the Innomag Dissertation Award 2018.</p>19.03.2018

    HZB scientist got the dissertation prize at the spring conference of the Deutsche Physikalische Gesellschaft

    Dr. Nele Thielemann-Kühn was awarded the dissertation prize of the magnetism research group at the spring conference of the Deutsche Physikalische Gesellschaft (German physical society/DPG) in Berlin. The prize is awarded for outstanding research in the field of magnetism. [...].

  • <p>A synchrotron source point image of a bending magnet of the Twin Orbit modus. The second orbit closes after three revolution and is winding around the standard orbit at the center. Credit: HZB</p>15.03.2018

    Twin Orbit operation successfully tested at BESSY II

    The first “Twin Orbit User Test week” at BESSY II in February 2018 was a big success and can be considered as an important step towards real user operation. Physicists at Helmholtz-Zentrum Berlin have been able to store two separate electron beams in one storage ring. The twin orbit operation mode can serve users with different needs of the time structure of the photon pulses simultaneously and offers elegant options regarding the future project BESSY VSR. [...].

  • 12.03.2018

    Register now: Smart City - Interdisciplinary conference on solar energy and architecture

    "INNOVATION IN SOLAR BUILDING SKINS & ENERGY EFFICIENCY TOWARDS SUSTAINABLE CITIES" will take place in Berlin in March 19th-20th.

    Experts from the construction industry, photovoltaic research field, and the financial sector will discuss innovative solutions for solar facades in combination with energy efficiency in buildings and cities. Photovoltaics integrated into buildings represent an important component for energy-efficient cities of the future.

    Online registration is open until wednesday 14th March. 
    Students are admitted for a reduced fee. [...].

  • 08.03.2018

    Message to residents: false alarm at the research reactor BER II on 7 March 2018

    We wold like to inform you that a false alarm was triggered at 9:19 p.m. on Wednesday the 7th of March 2018 at the Berliner Experimental Reactor BER II. At the time the alarm went off, BER II was still operating normally and continuously. After clarifying the trigger of the false alarm, a verbal all-clear was given over the campus PA system. [...].

  • <p>PCN nanolayers under sunlight can split water. Image: Nannan Meng /Tianjin University</p>28.02.2018

    Solar–to-hydrogen conversion: nanostructuring increases efficiency of metal-free photocatalysts by factor eleven

    Polymeric carbon nitrides exhibit a catalytic effect in sunlight that can be used for the production of hydrogen from solar energy. However, the efficiency of these metal-free catalysts is extremely low. A team at the Tianjin University in China, in collaboration with a group at the Helmholtz-Zentrum Berlin, has increased the catalytic efficiency of these polymeric carbon nitrides by a factor eleven through a simple process resulting in a larger surface area. The paper was published in the journal Energy & Environmental Science. [...].

  • <p>Benjamin Rotenberg is a guest researcher at the HZB-Institute for Solar Fuels in 2018. Photo:CNRS/Cyril Fresillon</p>23.02.2018

    Guest researcher at HZB: Bessel Prize Winner Benjamin Rotenberg

    Prof. Benjamin Rotenberg has received a Friedrich Wilhelm Bessel Research Prize from the Alexander von Humboldt Foundation for 2018 and will be spending time regularly as a guest researcher at the Helmholtz-Zentrum Berlin. Rotenberg is a researcher of the Centre National de Recherche Scientifique (CNRS) and heads a research group in Sorbonne Université in Paris. He works in an interdisciplinary area spanning physics and chemistry for modelling transport processes in materials, at interfaces, and in electrolytes. [...].

  • <p>The GaAs nanocrystal has been deposited on top of a silicon germanium needle, as shown by this SEM-image. The rhombic facets have been colored artificially. Image: S. Schmitt/HZB</p>22.02.2018

    Luminescent nano-architectures of gallium arsenide

    A team at the HZB has succeeded in growing nanocrystals of gallium arsenide on tiny columns of silicon and germanium. This enables extremely efficient optoelectronic components for important frequency ranges to be realised on silicon chips. [...].

  • <p>Dr. Raul Garcia Diez was awarded for his PhD Thesis with the Dissertationspreis Adlershof 2017.</p>20.02.2018

    Dr. Raul Garcia Diez wins the Dissertationspreis Adlershof 2017

    With his talk on the properties of nanoparticles and how they can be measured more accurately at BESSY II, Dr. Raul Garcia Diez convinced the jury and was awarded the Dissertationspreis Adlershof 2017. Humboldt-Universität zu Berlin, IGAFA e. V. and the WISTA MANAGEMENT GmbH are the sponsors of this prize endowed with 3000 Euros. Garcia Diez completed his PhD in 2017 at PTB and TU Berlin and is now active as a post-doctoral researcher at HZB. [...].

  • <p>Hier geht es zur<a href="/media/media/aktuell/print//lichtblick/206/hzb_lichtblick-34_februar-2018_web_extern.pdf"> Online-Ausgabe.</a></p>19.02.2018

    Neue HZB-Zeitung lichtblick erschienen

    (german)

    Perowskit-Solarzellen haben einen rasanten Aufstieg hingelegt – und vermutlich einen noch steileren vor sich. Die Materialien sind so interessant, dass jetzt schon Industriepartner auf den Zug aufspringen, um diese Entwicklung nicht zu verpassen. Lesen Sie in der neuen Ausgabe, was die Solarzellen so besonders macht und warum Oxford PV, ein führender Anbieter auf diesem Gebiet, jetzt mit dem HZB kooperiert (Seite 3 und Seite 6-7). [...].

  • <p>Pencil, paper and co-polymer varnish are sufficient for a thermoelectrical device. Credit: HZB</p>16.02.2018

    Hidden talents: Converting heat into electricity with pencil and paper

    Thermoelectric materials can use thermal differences to generate electricity. Now there is an inexpensive and environmentally friendly way of producing them with the simplest of components: a normal pencil, photocopy paper, and conductive paint are sufficient to convert a temperature difference into electricity via the thermoelectric effect. This has now been demonstrated by a team at the Helmholtz-Zentrum Berlin. [...].

  • 12.02.2018

    Joint graduate school for data science sponsors its first projects

    The Helmholtz Association, the Einstein Center Digital Future (ECDF) and the universities of Berlin are creating a new PhD programme in Berlin for the field of data science. Helmholtz-Zentrum Berlin is involved in several of the projects. The first training positions are already advertised.  [...].

  • <p>Sketch of the stripe order: The charge stripes, which are superconducting, are shown in blue. Reprinted with modifications from Physical Review Letters.</p>09.02.2018

    User research at BER II: New insights into high-temperature superconductors

    After 30 years of research, there are still many unsolved puzzles about high-temperature superconductors - among them is the magnetic “stripe order” found in some cuprate superconductors. A Danish research team has taken a closer look at these stripes, using high-resolution neutron scattering at the spectrometers FLEXX (HZB) and ThALES (ILL, Grenoble). Their results, now published in Physical Review Letters, challenge the common understanding of stripe order, and may contribute to unveil the true nature  of high-temperature superconductivity. [...].

  • <p>Electrons with differing energies are emitted along various crystal axes in the interior of the sample as well as from the surface. These can be measured with the angular-resolved photoemission station (ARPES) at BESSY II. Left image shows the sample temperature at 25 K, right at only 1 K. The energy distribution of the conducting and valence band electrons can be derived from these data. The surface remains conductive at very low temperature (1 K). Credit: HZB</p>06.02.2018

    40-year controversy in solid-state physics resolved

    An international team at BESSY II headed by Prof. Oliver Rader has shown that the puzzling properties of samarium hexaboride do not stem from the material being a topological insulator, as it had been proposed to be. Theoretical and initial experimental work had previously indicated that this material, which becomes a Kondo insulator at very low temperatures, also possessed the properties of a topological insulator. The team has now published a compelling alternative explanation in Nature Communications, however. [...].

  • 01.02.2018

    HZB launches Helmholtz International Research School in collaboration with Israel

    On 1st February 2018, the Helmholtz-Zentrum Berlin (HZB) has established the Helmholtz International Research School HI-SCORE, which will be oriented towards solar energy research. To accomplish this, HZB is collaborating with the Weizmann Institute in Rehovot, the Israeli Institute of Technology (Technion) in Haifa, and three Israeli universities as well as universities in Berlin and Potsdam.

      [...].

  • <p>The new building block (left, red outline) comprises two modified starting molecules connected to each other by a silver atom (blue). This leads to complex, semiregular tessellations (right, microscope image). Image: Klappenberger and Zhang / TUM</p>23.01.2018

    User experiment at BESSY II: Complex tessellations, extraordinary materials

    Simple organic molecules form complex materials through self-organization

    An international team of researchers lead by the Technical University of Munich (TUM) has discovered a reaction path that produces exotic layers with semiregular structures. These kinds of materials are interesting because they frequently possess extraordinary properties. In the process, simple organic molecules are converted to larger units which form the complex, semiregular patterns. With experiments at BESSY II at Helmholtz-Zentrum Berlin this could be observed in detail. [...].

  • 22.01.2018

    Application open for Young Investigator Workshop

    The Virtual Institute (VI) “Dynamic Pathways in Multidimensional Landscapes” explores the governing principles of material functions and is internationally highly visible. Young scientists are invited to participate in the Young Investigators Workshop which takes place from 22 to 27 April 2018 in Grainau. Please apply by 20th February 2018.   [...].

  • <p class="MsoNoSpacing">SEM-images of the different perovskite solar cell architectures, left with planar interface, right with mesoporous interface. Images are coloured: metal oxide (light blue), interface (red), perovskite (brown), hole conducting layer (dark blue), topped with contact (gold). &nbsp;Scale bar is 200 nm. Image: A. Gagliardi/TUM</p> <p>&nbsp;</p>18.01.2018

    Perovskite solar cells: mesoporous interface mitigates the impact of defects

    The nominal cell operating life of perovskite solar cells is strongly influenced by their inner architecture.This was shown by two scientists at the Helmholtz-Zentrum Berlin and the Technical University of Munich. They combined experiments with numerical simulations in order to explain this observation. [...].

  • <p>Simplified cross-section of a perovskite solar cell: the perovskite layer does not cover the entire surface, but instead exhibits holes. The scientists could show that a protective layer is being built up which prevents short circuits. Picture: HZB</p>15.01.2018

    Perovskite solar cells: perfection not required!

    Experiments at BESSY II reveal why even inhomogeneous perovskite films are highly functional 

    Metal-organic perovskite layers for solar cells are frequently fabricated using the spin coating technique. If you follow the simplest synthesis pathway and use industry-relevant compact substrates, the perovskite layers laid down by spin coating generally exhibit numerous holes, yet attain astonishingly high levels of efficiency. The reason that these holes do not lead to significant short circuits between the front and back contact and thus high-rate charge carrier recombination has now been discovered by a HZB team headed by Dr.-Ing. Marcus Bär in cooperation with the group headed by Prof. Henry Snaith (Oxford Univ.) at BESSY II.

      [...].

  • <p>Oxford PV &ndash; The Perovskite Company's industrial site in Brandenburg an der Havel, Germany where the company is working rapidly to transfer its advanced perovskite on silicon tandem solar cell technology to an industrial scale process. Credit: Oxford PV</p>09.01.2018

    Oxford PV collaborates with HZB to move perovskite solar cells closer to commercialisation

    Perovskite solar technology leader Oxford PV collaborates with leading German research centre to support the accelerated transfer of its technology into silicon cell manufacturing lines. [...].

  • <p>A look into the lab where the components of the electron source were tested.</p>08.01.2018

    Milestone reached: electron source for bERLinPro produces its first beam

    On the HZB Adlershof campus, researchers are building a prototype of an energy-recovery linear accelerator (bERLinPro). Intensive research has been going on for years to develop the worldwide unique key components required for this accelerator. Now, the scientists and engineers have reached a very important milestone: from the interactions between cathode, laser pulse and electric field inside the cavity, the first electrons have been produced and accelerated. [...].