Towards high-efficiency and low-cost epitaxial CIGSu/Si tandem solar cells

Olivier Durand; Eugène Bertin; Nicolas Barreau; Eric Gautron; Antoine Létoublon; Charles Cornet; Maud Jullien; Alexandre Crossay; Polyxeni Tsoulka; Daniel Lincot

doi:10.1117/12.2619151

5 March 2022 Towards high-efficiency and low-cost epitaxial CIGSu/Si tandem solar cells

Olivier Durand, Eugène Bertin, Nicolas Barreau, Eric Gautron, Antoine Létoublon, Charles Cornet, Maud Jullien, Alexandre Crossay, Polyxeni Tsoulka, Daniel Lincot

Author Affiliations +

Proceedings Volume PC12002, Oxide-based Materials and Devices XIII; PC120020Q (2022) https://doi.org/10.1117/12.2619151
Event: SPIE OPTO, 2022, San Francisco, California, United States

Abstract

We propose to explore tandem junctions associating single crystalline silicon bottom cell (Eg = 1.12 eV) and wide bandgap (1.7 eV) CuIn0.75Ga0.25S2 (pure-sulfide CIGSu) top cell, using GaP intermediate layer. Our purpose is to grow CIGSu films under epitaxial conditions on GaP/Si(001) to improve the top cell efficiency, thanks to a reduction of the structural defects density detrimental for the cell performance, so that CIGSu/Si tandem cells can emerge as cost competitive for the next generation of PV modules. Record efficiency on standard AZO/ZnMgO/CdS/CIGSu/Mo/Glass solar cell and epitaxy of CIGSsu on GaP/Si are demonstrated.

Conference Presentation

Citation Download Citation

Olivier Durand, Eugène Bertin, Nicolas Barreau, Eric Gautron, Antoine Létoublon, Charles Cornet, Maud Jullien, Alexandre Crossay, Polyxeni Tsoulka, and Daniel Lincot "Towards high-efficiency and low-cost epitaxial CIGSu/Si tandem solar cells", Proc. SPIE PC12002, Oxide-based Materials and Devices XIII, PC120020Q (5 March 2022); https://doi.org/10.1117/12.2619151

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