More Electricity from the Sun

Surface modification for more effective textured perovskite/silicon tandem solar cells

02-Aug-2024 - A coating of solar cells with special organic molecules could pave the way for a new generation of solar panels. As a research team reports in the journal Angewandte Chemie, this coating can increase the efficiency of monolithic tandem cells made of silicon and perovskite while lowering their ...

Light, flexible, efficient: Perovskite-based tandem solar cells

From the lab to the roof

07-May-2024 - All-perovskite tandem solar cells could soon pick up where silicon solar cells reach their limits. These highly efficient, lightweight and flexible cells have already proven themselves in the laboratory – now, Empa researchers are working on scaling them up and making them ready for the real ...

AI for perovskite solar cells: Key to better manufacturing

Artificial Intelligence methods guide researchers in developing improved manufacturing processes for highly efficient solar cells – a blueprint for other research areas

24-Nov-2023 - Perovskite tandem solar cells combine a perovskite solar cell with a conventional solar cell, for example based on silicon. These cells are considered a next-generation technology: They boast an efficiency of currently more than 33 percent, which is much higher than that of conventional silicon ...

Record-breaking tandem solar cell now with precise scientific explanations

Impressive development in recent years

12-Jul-2023 - "This achievement was possible because we at HZB have built up expertise in both silicon heterojunction technology and perovskite solar cells and work very closely together," says Prof. Dr. Steve Albrecht, who leads a research group on perovskite tandem solar cells at HZB. For example, the ...

World record back at HZB: Tandem solar cell achieves 32.5 percent efficiency

Interface modifications

20-Dec-2022 - The current world record of tandem solar cells consisting of a silicon bottom cell and a perovskite top cell is once again at HZB. The new tandem solar cell converts 32.5 % of the incident solar radiation into electrical energy. The certifying institute European Solar Test Installation (ESTI) in ...

Tandem solar cells with perovskite: nanostructures help in many ways

Customised nanotextures can help to improve perowskite semiconductor materials on diverse levels

02-Nov-2022 - By the end of 2021, teams at HZB had presented perovskite silicon tandem solar cells with an efficiency close to 30 percent. This value was a world record for eight months, a long time for this hotly contested field of research. In the journal Nature Nanotechnology, the scientists describe how ...

Energy transition: new-generation solar cells raise efficiency

19-Apr-2022 - A research team has developed a highly efficient tandem solar cell composed of perovskite and organic absorbers which can be produced at a lower cost than conventional solar cells made of silicon. The further development of this technology is expected to make solar energy even more sustainable. A ...

Almost 30% efficiency for next-generation tandem solar cells

World record again at HZB

24-Nov-2021 - Three HZB teams led by Prof. Christiane Becker, Prof. Bernd Stannowski and Prof. Steve Albrecht have jointly managed to increase the efficiency of perovskite silicon tandem solar cells fabricated completely at HZB to a new record value of 29.80%. The value has now been officially certified and is ...

Perovskite/silicon tandem solar cells on the threshold of 30% efficiency

Consistent performance over 300 hours

14-Dec-2020 - An HZB team has published a report in the journal Science on the development of its current world record of 29.15% efficiency for a tandem solar cell made of perovskite and silicon. The tandem cell provided stable performance for 300 hours – even without encapsulation. To accomplish this, the ...

New Record Efficiency for Tandem Solar Cell Technology

12-Aug-2020 - In the field of photovoltaics, intensive research is being carried out to continually improve solar cell efficiency. Increasingly, the focus is on tandem photovoltaics, in which high-performance solar cell materials are brought together in various combinations in order to use the solar spectrum ...