Perovskite-silicon solar cell research collaboration hits 25.2% efficiency: HZB scientists presented tandem solar cells at an international conference

15. June 2018

Perovskite-silicon solar cell research collaboration hits 25.2% efficiency

HZB scientists presented tandem solar cells at an international conference

Tandem-Solarzelle. Bild: HZB

Perovskite-based tandem solar cells can achieve now efficiencies better than 25%. Credit: HZB

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.

"Perovskite-based tandem solar cells can use light particularly efficiently and therefore offer the opportunity to achieve even higher efficiencies. That is why we have significantly expanded our expertise with the new Helmholtz innovation laboratory HySPRINT," says Prof. Dr. Rutger Schlatmann, Director of the Competence Center Thin Film and Nanotechnology for Photovoltaics Berlin (PVcomB) at HZB. "In our cooperation with Oxford PV, we aim to further optimize perovskite silicon tandem cells, demonstrate their scalability and facilitate their integration into large-area solar modules. For this new result we have optimized our high-efficiency silicon heterojunction bottom cell and developed an optical adaptation to the top cell using a very specific SiOx intermediate layer".

At the World Conference on Photovoltaic Energy Conversion, WCPEC-7 in Waikoloa, Hawaii, tandem solar cells involving perovskites were an important topic: two records have been presented with 25.2% certified efficiency: one from the group of Prof. Christophe Ballif at EPFL/CSEM and one from the consortium HZB/OxfordPV/Oxford University, presented by HZB scientist Dr. Bernd Stannowski. The third one, with 25.0% certified efficiency is a tandem cell developed by an HZB team headed by Dr. Steve Albrecht.

Oxford PV was established in 2010 and has had a close working relationship with Professor Snaith’s research group at the University of Oxford. In January 2018, Oxford PV announced its collaboration with HZB, the leading German research centre focused on energy materials research.

More Information:

Helmholtz-Zentrum Berlin für Materialien und Energie
Institute Competence Centre Photovoltaics Berlin (PVcomB)
Prof. Dr. Rutger Schlatmann
Tel.: (030) 8062-15680
Fax: (030) 8062-15677
Email: rutger.schlatmann@helmholtz-berlin.de

Press Office:
Dr. Antonia Rötger
Tel.: (030) 8062-43733
Fax: (030) 8062-42998
Email: antonia.roetger@helmholtz-berlin.de

Related News

HySPRINT-Labor am HZB © HZB/P. Dera
Launch of European Perovskite Initiative EPKI
HZB is participating in the initiative for the development of Perovskite based solar technology
CIGS Tandem scheme
Thin-film tandem cells made of perovskite and CIGSe semiconductors
Ultra-thin and extremely efficient solar cell due to new material combination
Silizium-Perowskit-Tandemsolarzelle. Bild: HZB
New records in perovskite-silicon tandem solar cells
An HZB team has been able to increase the efficiency achieving 25.5 %, which is the highest published value to date
HZB researchers are used to boost the efficiency of silicon solar cells
In the journal Materials Horizons, researchers from Helmholtz-Zentrum Berlin (HZB) and international colleagues describe how this limit can be abolished
HySPRINT-Labor am HZB © HZB/M. Setzpfandt
2.8 Mio Euro Funding for preparing perovskite solar cells for high volume manufacturing
Helmholtz-Zentrum Berlin and partners want to further improve the manufacturing process
Bild: © Uni Potsdam
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.
Antonio Abate © J. Böhm/HZB
ERC Starting Grant awarded to Antonio Abate
HZB scientist has been awarded for his research project on perovskite solar cells.
Bild: Oxford PV
Oxford PV collaborates with HZB
To move perovskite solar cells closer to commercialisation
Perowskitmaterialien. Bild: HZB
Trends and pathways to high-efficiency perovskite solar cells
Scientists from Helmholtz-Zentrum provide an overview of the advancement of the class of materials in renowned scientific journal
Helmholtz Association is supporting research in photovoltaic and hydrogen energy technology
1.9 million Euros additional funding for Helmholtz Innovation Lab HySPRINT