Bandgap Tunable Two-Step Vapor-Deposited Perovskite Absorbers for Perovskite-Silicon Tandem Solar Cells
: Kuba, Austin G.; Artuk, Kerem; Othman, Mostafa; Turkay, Deniz; Ongaro, Chiara; Debastiani, Michele; Guesnay, Quentin; Golobostanfard, Mohammad Reza; Heydarian, Maryamsadat; Fischer, Oliver; Schubert, Martin C.; Sahli, Florent; Ansel, Yohann; Jeangros, Quentin; Hessler-Wyser, Aïcha; Ballif, Christophe; Wolff, Christian M.
Publisher: American Chemical Society (ACS)
: 2026
ACS Energy Letters
: 11
: 4
: 3164
: 3167
: 2380-8195
DOI: https://doi.org/10.1021/acsenergylett.6c00156
: https://doi.org/10.1021/acsenergylett.6c00156
: https://research.utu.fi/converis/portal/detail/Publication/523085038
We report a two-step thermal evaporation–close space sublimation deposition method for tunable bandgap lead halide perovskites with single junction solar cell efficiencies exceeding 20%. These absorbers are integrated into perovskite–silicon tandem solar cells with stabilized efficiencies of >29%.
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The authors acknowledge funding from the European Union’s Horizon 2020 research and innovation program (TRIUMPH, 101075725), the Swiss State Secretariat for Education Research and Innovation (SERI) (TRIUMPH, 101075725), the Swiss Federal Office of Energy (PERSISTARS, BESTOBOT), the “fonds électricité vitale vert des Services industriels de Genèves”, and the ETH Domain through an AM grant (AMYS). M.O., D.T., and A.G.K. acknowledge funding from the European Union’s Horizon 2020 research and innovation program under a Marie Skłodowska-Curie grant (945363 and 101034260). D.T. acknowledges the State Secretariat for Education, Research, and Innovation for an FCS/ESKAS Swiss Government Excellence Scholarship.
