Come to the Long Night of the Sciences in Wannsee: 17.06. from 5-0 p.m.
e will open our doors for the Long Night of the Sciences. Get exciting insights into our energy research, visit laboratories and ask us your questions about the energy transition. Our school lab invites you to take part in hands-on experiments - and a science show will keep you pumped up and amazed! Please bring your identity card!
Saturday promises beautiful summer weather and we will open our green, nature-oriented campus in Wannsee for you. Immerse yourself in the world of research for one night and bring lots of questions! At HZB, we work every day to develop materials and solutions for a climate-neutral society. See how ultra thin solar cells can be made and learn what we are doing to make green hydrogen cheaper to produce in large quantities in the future. We are also researching new batteries that can store more energy than conventional ones in Wannsee.
Twelve different laboratories alone are open to you. Experience our research up close: whether crystal structures, atomic layers, solar cells or our high-tech microscopes - there is something interesting for everyone. A guided tour for children "The fantastic properties of light and how to explain them" and a tour of the orchard meadow are also on the programme. In addition, there are exciting lectures, among others on the plastic flood or photovoltaics in building facades.
On the Science Street there are many information stands with experiments. Here you can talk directly to our researchers. Among other things, we will show you how the decommissioned research reactor BER II is to be dismantled in the coming years. In addition, we will present the therapy of eye tumours with protons - this is also carried out at the Wannsee site.
Feel free to take a break in between. Our canteen offers delicious food and drinks. We also cook for you with a solar cooker (when the sun is shining) and invite you to taste our nitrogen ice cream.
When and where?
17.06.2023 from 5-0 op.m.
Helmholtz Centre Berlin
Hahn-Meitner-Platz 1
14109 Berlin
To be reached by shuttle buses from S Wannsee
Access regulations:
For security reasons, the following regulations apply to visits to the HZB: Persons aged 16 and over must present their valid original identity card (alternatively passport). Admission for persons under 16 years of age is only permitted when accompanied by a person of full age.
Tickets:
Adults: €14, reduced €9, family €27 (other ticket types here). Combined ticket with use of public transport and special buses for the Long Night. Tickets for the Long Night can be purchased here. There is also a box office at our Wannsee location.
- BESSY II: Evaporated perovskites in tandem solar cells improvedPerovskite-silicon tandem solar cells achieve significantly higher efficiencies than silicon solar cells on their own. One particularly attractive method is co-evaporation of the perovskite precursor molecules on top of the silicon subcell. Scientists at HZB have analysed film growth on the nanoscale at BESSY II and found a new way to improve the quality of the perovskite layer: adding a thin seed layer of caesium chloride between the two sub-cells promotes uniform perovskite growth and suppresses the formation of undesired lead iodide at the interface.
- Discover HZB at our Open Day on 28 AugustWe warmly invite you to our Open Day at the Lise Meitner Campus of the Helmholtz Centre Berlin (HZB) in Wannsee! A varied programme awaits you, featuring around 20 stations, guided tours, talks and hands-on activities for all.
- Hatice Mutlu appointed to the Helmholtz Institute HIPOLE in JenaProf. Dr Hatice Mutlu is the new professor of sustainable polymer chemistry at HIPOLE Jena, the Helmholtz Institute for Polymers in Energy Applications. On 17 August 2026, she visited the HZB campus in Berlin-Adlershof including the BESSY II lightsource and discussed future collaboration with researchers and the board of directors.