Design and performance evaluation of all-inorganic AgTaS3 perovskite solar cells

Abstract

Narrow bandgap AgTaS₃ perovskite can offer highly efficient thin film solar cells (SCs) and become Si counterparts that are leading in the market. Herein, we study the response of a n-CdS/p-AgTaS₃/p⁺-Al_0.8Ga_0.2Sb device according to the variation of thickness, doping concentration, and defect densities in each layer using a solar cell capacitance simulator (SCAPS-1D). The optimized cell shows a V_OC of 0.78 V, PCE of 27.89% accompanied by a J_SC of 46.37 mA cm⁻², and a fill factor of 77.06%, paving the way for novel double heterojunction perovskite photovoltaic (PV) cells with remarkable performance.