Impact on generation and recombination rate in Cu₂ZnSnS₄ (CZTS) solar cell for Ag₂S and In₂Se₃ buffer layers with CuSbS₂ back surface field layer

Abstract

For photovoltaic (PV) applications, the earth‐abundant and non‐hazardous Kesterite Cu2ZnSnS4 (CZTS) is a possible substitute for chalcopyrite copper indium gallium selenide (CIGS). This research offers insight into the most innovative method for improving the performance of Kesterite solar cells (SCs) by using CuSbS2 back surface field (BSF) and Ag2S and In2Se3 as buffer layers, focuses on aligning energy bands, reducing non‐radiative recombination, and improving open‐circuit voltage (Voc). The proposed cells are Ni/CuSbS2/CZTS/In2Se3/ITO/Al and Ni/CuSbS2/CZTS/Ag2S/ITO/Al by adding interfaces. The optimized CZTS SCs with In2Se3 achieve a short‐circuit current density (Jsc) of 30.274 mA/cm2, fill factor (FF) of 89.15%, power conversion efficiency (PCE) of 31.67%, and Voc of 1.173 V. With the Ag2S buffer layer, PCE is 31.02%, FF is 88.61%, Jsc is 30.245 mA/cm2, and Voc is 1.157 V. These results depict the potential of CZTS‐based SCs with improved performance compared with conventional structures.

Role of Organic HTLs in Pushing Ag3BiI6 Solar Cells to New Heights by Combining Experiment and Simulation: Achieving Maximum Efficiency

“…In the SCAPS-1D, electrical and optical properties of solar cells are simulated in one dimension. , In order to calculate the performance characteristics of a solar cell, a variety of parameters are taken into account, including material properties, device structure, and operating conditions. It is used to investigate and maximize solar cell efficiency under various conditions, and it was created by Burgelman et al’s research. − Poisson’s equation and equation of continuation are used in SCAPS 1D since they are essential to the study regarding semiconductor device physics.…”