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Defect Optimization of CZTS/MASnI3 Heterojunction Solar Cell Yielding 30.8% Efficiency

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Abstract

A heterojunction solar cell with two absorber layers has been simulated using SCAPS-1D software. To overcome the toxicity of lead in perovskite-based solar cells, a tin-based perovskite structure has been used along with copper zinc tin sulfide (CZTS). Considering two absorber layers, key parameters like thickness, defects, and interface defect densities have been optimized to obtain an enhanced efficiency. A detailed study of defect density and its variation with lifetime, diffusion length, and efficiency are described. The investigation reveals that minimum defect density results in maximum output. On optimizing various parameters, an enhanced result of open circuit voltage (Voc) 0.92 V, short circuit current density (Jsc) 42.74 mA/cm2, fill factor (FF) 78.32%, and efficiency (ɳ) 30.83% have been yielded. A comparative study with previous experimental and theoretical data has been carried out to validate the present study.

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Acknowledgments

The authors would like to thank Marc Burgelman, ELSI, University of Gent, Belgium for providing the SCAPS simulation software (Version: SCAPS3307; 21 February, 2019).

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Authors and Affiliations

  1. School of Applied Sciences, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, India

    Ipsita Mohanty & Sutanu Mangal

  2. School of Electronics Engineering, Kalinga Institute of Industrial Technology, Bhubaneswar, 751024, India

    Udai P. Singh

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  1. Ipsita Mohanty
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  2. Sutanu Mangal
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Correspondence to Sutanu Mangal.

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Mohanty, I., Mangal, S. & Singh, U.P. Defect Optimization of CZTS/MASnI3 Heterojunction Solar Cell Yielding 30.8% Efficiency. J. Electron. Mater. 52, 2587–2595 (2023). https://doi.org/10.1007/s11664-023-10221-3

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