Monolithic perovskite/silicon tandems with >28% efficiency: role of silicon-surface texture on perovskite properties

0567054 - FZÚ 2024 RIV DE eng J - Journal Article
De Bastiani, M. - Jalmood, R. - Liu, J. - Ossig, C. - Vlk, Aleš - Vegso, K. - Babics, M. - Isikgor, F.H. - Selvin, A.S. - Azmi, R. - Ugur, E. - Banerjee, Swarnendu - Mirabelli, A.J. - Aydin, E. - Allen, T.G. - Rehman, A.U. - Van Kerschaver, E. - Siffalovic, P. - Stuckelberger, M.E. - Ledinský, Martin - De Wolf, S.
Monolithic perovskite/silicon tandems with >28% efficiency: role of silicon-surface texture on perovskite properties.
Advanced Functional Materials. Roč. 33, č. 4 (2023), č. článku 2205557. ISSN 1616-301X. E-ISSN 1616-3028
R&D Projects: GA MŠMT(CZ) LUASK22202
Research Infrastructure: CzechNanoLab - 90110
Institutional support: RVO:68378271
Keywords : perovskite * silicon tandem solar cells * silicon heterojunction solar cells * silicon texturing * current matching * silicon heterojunction solar cells
OECD category: Condensed matter physics (including formerly solid state physics, supercond.)
Impact factor: 19, year: 2022
Method of publishing: Limited access
https://doi.org/10.1002/adfm.202205557

Textured silicon wafers used in silicon solar cell manufacturing offer superior light trapping, which is a critical enabler for high-performance photovoltaics. A similar optical benefit can be obtained in monolithic perovskite/silicon tandem solar cells, enhancing the current output of the silicon bottom cell. Yet, such complex silicon surfaces may affect the structural and optoelectronic properties of the overlying perovskite films. Here, through extensive characterization based on optical and microstructural spectroscopy, it is found that the main effect of such substrate morphology lies in an altering of the photoluminescence response of the perovskite, which is associated with thickness variations of the perovskite, rather than lattice strain or compositional changes. With this understanding, the design of high-performance perovskite/silicon tandems is rationalized, yielding certified power conversion efficiencies of >28%.
Permanent Link: https://hdl.handle.net/11104/0338788