Monolithic Perovskite/Silicon Tandems with >28% Efficiency: Role of Silicon-Surface Texture on Perovskite Properties

Authors

M. De Bastiani, R. Jalmood, J. Liu, Ch. Ossig, A. Vlk, K. Vegso, M. Babics, F. H. Isikgor, A. S. Selvin, R. Azmi, E. Ugur, S. Banerjee, A. J. Mirabelli, E. Aydin, T. G. Allen, A. Ur Rehman, E. Van Kerschaver, P. Siffalovic, M. E. Stuckelberger, M. Ledinsky, S. De Wolf

Laboratory / Department
Department of Thin Films and Nanostructures
Citation
Adv. Funct. Mater (2023) 2205557.
DOI
doi.org/10.1002/adfm.202205557
Year
2023

Textured silicon wafers used in solar cells offer superior light trapping, which is critical for high-performance photovoltaics. A similar benefit can be obtained in monolithic perovskite/silicon tandem solar cells. Here, through advanced characterization, it is found that the main effect of substrate morphology lies in an altering of the photoluminescence response of the perovskite associated with its thickness variations. With this understanding, a perovskite/silicon tandem yielding certified power conversion efficiencies of >28% was designed.

Schematic representation of the tandem device on the left and picture of the actual device on the right.
Schematic representation of the tandem device on the left and picture of the actual device on the right.

Contact person: Martin Ledinský