Interface engineering for high-performance, triple-halide perovskite–silicon tandem solar cells

Author:

Mariotti Silvia1ORCID,Köhnen Eike1ORCID,Scheler Florian1ORCID,Sveinbjörnsson Kári1ORCID,Zimmermann Lea1ORCID,Piot Manuel12ORCID,Yang Fengjiu1ORCID,Li Bor1ORCID,Warby Jonathan3,Musiienko Artem1ORCID,Menzel Dorothee1ORCID,Lang Felix3ORCID,Keßler Sebastian1ORCID,Levine Igal1ORCID,Mantione Daniele456ORCID,Al-Ashouri Amran1ORCID,Härtel Marlene S.1ORCID,Xu Ke1,Cruz Alexandros1ORCID,Kurpiers Jona1ORCID,Wagner Philipp1ORCID,Köbler Hans1ORCID,Li Jinzhao1,Magomedov Artiom7ORCID,Mecerreyes David46,Unger Eva1ORCID,Abate Antonio1ORCID,Stolterfoht Martin3ORCID,Stannowski Bernd1ORCID,Schlatmann Rutger1ORCID,Korte Lars1ORCID,Albrecht Steve18ORCID

Affiliation:

1. Solar Energy Division, Helmholtz-Zentrum Berlin für Materialien und Energie GmbH, 12489 Berlin, Germany.

2. Laboratory of Semiconductor Materials, Institute of Materials, Faculty of Engineering, Ecole Polytechnique Fédérale de Lausanne, 1015 Lausanne, Switzerland.

3. Institute of Physics and Astronomy, University of Potsdam, 14476 Potsdam, Germany.

4. POLYKEY Polymers, Joxe Mari Korta Center, 20018 Donostia-San Sebastian, Spain.

5. POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastián, Spain.

6. IKERBASQUE, Basque Foundation for Science, 48009 Bilbao, Spain.

7. Kaunas University of Technology, Kaunas, Lithuania.

8. Technische Universität Berlin, Fakultät Elektrotechnik und Informatik, 10587 Berlin, Germany.

Abstract

Improved stability and efficiency of two-terminal monolithic perovskite-silicon tandem solar cells will require reductions in recombination losses. By combining a triple-halide perovskite (1.68 electron volt bandgap) with a piperazinium iodide interfacial modification, we improved the band alignment, reduced nonradiative recombination losses, and enhanced charge extraction at the electron-selective contact. Solar cells showed open-circuit voltages of up to 1.28 volts in p-i-n single junctions and 2.00 volts in perovskite-silicon tandem solar cells. The tandem cells achieve certified power conversion efficiencies of up to 32.5%.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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