In the storage ring hall of BESSY II
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perovskite silicon tandem solar cells

World record again at HZB

Three HZB teams have managed to increase the efficiency of perovskite silicon tandem solar cells to a new record value of 29.80 %. This brings the 30 percent mark within reach. Get more information on this scientific highlight here

Pouch Cell Laboratory

Battery research at HZB

Better batteries are needed for the energy transition. To this end, we are developing new types of electrode materials and conducting research with partners in the BMBF project SkaLis. A 360° panorama tour shows the Pouch Cell Laboratory, where the experimental batteries are produced.

Physicist Annette Pietzsch

More than just a job

Physicist Annette Pietzsch develops instruments that enable researchers at BESSY II to observe how molecules react with each other. "We study the fundamental phenomena of our world here," she says. Find out how to master challenges in everyday life and why researchers sometimes need a bit of frustration tolerance. Click here for her portrait.


Kick-off Catalysis Laboratory CatLab

On June 21st we celebrated the launch of the new Catalysis Laboratory CatLab. If you missed the event, we invite you to watch it on our YouTube channel. Please find more information to CatLab here.

Photoanode for the production of solar hydrogen

Green hydrogen for the energy transition

CatLab in Berlin will become a beacon for research on catalyst materials. Such materials are needed to produce green hydrogen with renewable energy such as sunlight or wind power. Green Hydrogen is considered a building block in a future climate-neutral energy supply. Climate protection and sustainability also played a major role in the architectural competition.

Schematic representation of the coronavirus protease

How does BESSY II contribute to the research on SARS-CoV-2?

At the light source BESSY II, researchers gain important insights into the corona virus. How do they do that? Our expert Manfred Weiss explains on the HZB YouTube channel how protein crystallography works. All important information about the SARS-CoV-2 research at BESSY II can be found here.

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The route to BESSY III

At HZB we have the experts for designing and building a new accelerator source, and we have many creative scientists onboard, who are making advancements in the development of photon research. The new source BESSY III is planned go into operation in 2030. Our aim is to offer worldwide unique experiments that will accelerate the gaining of new insights in many disciplines.

The head of proton therapy at the sector cyclotron

Proton Therapy

Patients with eye tumours are being treated with proton beams since June 1998 by  the Charité Universitätsklinikum Benjamin Franklin together with the Helmholtz-Zentrum Berlin. Especially, we succeed to destroy the tumour in more than 97 percent of the patients. Eye tumour therapy with protons


BER II Decommissioning

The Berlin experimental reactor BER II of the Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) was finally shut down at the end of 2019. We are currently preparing to decommission the facility.