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

Silvia Mariotti, Eike Köhnen, Florian Scheler, Kári Sveinbjörnsson, Lea Zimmermann, Manuel Piot, Fengjiu Yang, Bor Li, Jonathan Warby, Artem Musiienko, Dorothee Menzel, Felix Lang, Sebastian Keßler, Igal Levine, Daniele Mantione, Amran Al-Ashouri, Marlene S. Härtel, Ke Xu, Alexandros Cruz, Jona KurpiersPhilipp Wagner, Hans Köbler, Jinzhao Li, Artiom Magomedov, David Mecerreyes, Eva Unger, Antonio Abate, Martin Stolterfoht, Bernd Stannowski, Rutger Schlatmann, Lars Korte, Steve Albrecht*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

249 Scopus citations

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%.

Original languageEnglish
Pages (from-to)63-69
Number of pages7
JournalScience
Volume381
Issue number6653
DOIs
StatePublished - 1 Jul 2023
Externally publishedYes

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© 2023 American Association for the Advancement of Science. All rights reserved.

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