1st place for "Glowing Silicon Lake" at the HZB photo competition for the Long Night of Science
1st place: "The interior of an electron beam evaporator in operation" © HZB/Martin Muske und Mona Wittig
2nd place: "Rainbow in a sample" © Mattia Mulazzi
3rd place: "Cleaning an inkjet printhead after printing" © Michael Hengge
More than 200 people have chosen their favourite pictures in the photo competition "Moments at the HZB" during the Long Night of Science. The winners have now been chosen, but the decision was extremely close.
With 54 points, the photo of Martin Muske and Mona Wittig wins first place. It provides a fascinating insight into the work of an electron beam evaporator in which small silicon cubes are melted.
Second place goes to Mattia Mulazzi. His picture "Rainbow in a sample" was only just behind with 52 points. What can be seen is a dazzling single crystal that appears very aesthetic and captivates its viewers.
Michael Hengge's painting wins third place with 50 points. Hengge photographed a print head of an inkjet printer during cleaning. The water drops in the close-up immediately catch the eye. The device is used to produce organic LEDs or other components.
The winners can look forward to a voucher for photo accessories worth 150 €, 100 € and 50 €. The photo competition was sponsored by the Freundeskreis Helmholtz-Zentrum Berlin e. V. (Friends of the Helmholtz Centre Berlin).
The three winning photos can be viewed during the week in the BESSY II foyer. All exhibited pictures can be found in the PDF.
About the competition:
All HZB employees were invited to submit a maximum of five pictures for the photo competition. There were a total of 53 submissions, from which a jury made a preselection. 32 photos were then hung outdoors during the Long Night of Science on 15 June. The photo competition was very popular, with many guests taking part and awarding up to three points for their favourite photos.
We would like to thank the Freundeskreis Helmholtz-Zentrum Berlin e. V., whose support enabled the photo competition to be announced.
(sz)
https://www.helmholtz-berlin.de/pubbin/news_seite?nid=20611;sprache=en
- Copy link
-
New contact material boosts the efficiency of perovskite solar cells
A newly developed material for the electron contact improves the efficiency of single perovskite solar cells and perovskite/silicon tandem solar cells. The new material is based on a carborane molecule. It offers several advantages over the standard material C60, as shown by the study led by Steve Albrecht’s team. The new material has since been patented and is already commercially available.
-
Precision interface chemistry pushes perovskite solar cells beyond 26% efficiency
An international research collaboration has developed a new molecular strategy for controlling one of the most critical interfaces in perovskite solar cells. The resulting solar cells reached a power conversion efficiency of 26.19% in the n i p architecture, together with strong operational stability under prolonged illumination and elevated temperature. The results have been published in the Journal of the American Chemical Society.
-
Perovskite triple-junction solar cells: Even more efficient with GO/SAM bilayers
Perovskite semiconductors efficiently convert sunlight into electrical energy; they are also inexpensive and extremely lightweight. A team at HZB has developed a triple-junction solar cell comprising different perovskite semiconductors, with a novel bilayer of graphene oxide (GO) and a self-assembled monolayer (SAM) as the hole conductor. This bilayer significantly increases both efficiency and long-term stability. The efficiency of the novel perovskite triple-junction solar cell is 27.3% and shows hardly any decline even after more than 770 hours of operation. The study has been published in the renowned journal Joule.