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ARTICLE

Comparative study by simulation betweentwo structures CdS/CZTS and ZnS/CZTS via SCAPS-1D software

C. E. H. Merzouk^a, S. Bensmaine^a, L. Ghalmi^a, A. Aissat^b,c,*

a URMERResearch Unit on Renewable Materials and Energies, Department of Physics, Abou Bakr Belkaid University Tlemcen, (UABT), BP n°119,Algeria
b LATSI Laboratory, Department of electronics, Faculty of Technology, University of Saad Dahlab, Blida1, Blida 09000, Algeria
c University of Ahmed Draya, Adrar Algeria

* Corresponding Author:

Chalcogenide Letters 2024, 21(2), 113-124. https://doi.org/10.15251/CL.2024.212.113

Received 30 September 2023; Accepted 01 February 2024;

Abstract

This comparative numerical simulation study investigates the electrical characteristics of two heterojunction thin-film solar cells based on Kësterites Copper Zinc Tin Sulfide. The study compared two solar cells with different structures, Zinc Oxide ZnO/Cadmium Sulfide CdS/Kësterites CZTS/Molybdenum Mo and Zinc Oxide ZnO/Zinc Sulfide ZnS/Kësterites CZTS/Molybdenum Mo, to determine which is more efficient in achieving maximum photovoltaic efficiency. The results showed that the ZnO/ZnS/CZTS/Mo solar cell is the better option, outperforming the CdS/CZTS/Mo solar cell in terms of short-circuit current density J_sc, open-circuit voltage V_oc, form factor FF, and photovoltaic efficiency η. The study also investigated the effect of doping and layer thickness of CZTS and ZnS on photovoltaic parameters. The optimized ZnS/CZTS solar cell achieved an efficiency of 16.29% for ZnS and CZTS layer thicknesses of 0.02µm and 4μm, respectively, and doping concentrations of 10¹⁸ and 10¹⁶cm^-3, respectively. Overall, this study provides valuable insights for designing more efficient solar cells and optimizing their photovoltaic efficiency using Kësterites CZTS, CdS, and ZnS materials.

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