Theoretical analysis of CZTS/CZTSSe tandem solar cells.

doi:10.21203/rs.3.rs-399421/v1

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Research Article

Theoretical analysis of CZTS/CZTSSe tandem solar cells.

https://doi.org/10.21203/rs.3.rs-399421/v1

This work is licensed under a CC BY 4.0 License

Journal Publication

published 17 Aug, 2021

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Kesterite CZTS_xSe_1−x has a band gap range from 1 to 1.5eV depending upon S/Se ration. The tandem of kieserite solar cell is proposed and simulated in SCAPS-1D for device configuration and analysis of the performance. CZTS of bandgap 1.5eV as top cell and CZTSSe of bandgap 1.1eV as bottom cell are stacked in tandem for the structure. The thickness of the two layer are optimized for matching the short circuit current J_SC in the tandem. This study shines light on alternative technique of thin film multijunction for enhancing the efficiency of CZTS_xSe_1−x solar cells.

Optical Materials and Devices

Multijunction

SCAPS-1D

Simulation

Chalcogenide solar cell

Bandgap tunning