Bandgap Tunable Two-Step Vapor-Deposited Perovskite Absorbers for Perovskite-Silicon Tandem Solar Cells - UTU Research Portal

A1 Refereed original research article in a scientific journal

Bandgap Tunable Two-Step Vapor-Deposited Perovskite Absorbers for Perovskite-Silicon Tandem Solar Cells

Authors: 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.

Publication year: 2026

Journal: ACS Energy Letters

Volume: 11

Issue: 4

First page : 3164

Last page: 3167

eISSN: 2380-8195

DOI: https://doi.org/10.1021/acsenergylett.6c00156

Publication's open availability at the time of reporting: Open Access

Publication channel's open availability : Partially Open Access publication channel

Web address : https://doi.org/10.1021/acsenergylett.6c00156

Self-archived copy’s web address: https://research.utu.fi/converis/portal/detail/Publication/523085038

Self-archived copy's licence: CC BY

Self-archived copy's version: Publisher`s PDF

Abstract

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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Funding information in the publication:
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.