Özet:

In this research study, we report the design of a CuSbS2 thin film solar cell. CuSbS2 is a chalcostibite-based semiconductor absorber that can be used in place of CIGS/CdTe thin film solar cells. The abundantly available chalcostibite CuSbS2 has a bandgap of 1.52 eV and an optical absorption coefficient of 105 cm-1 , making it a perfect candidate for a thin film absorber layer. A numerical analysis has been carried out using the wx-AMPS software to evaluate the efficiency and other performance parameter of the proposed CuSbS2 cell. The optimized cell has a structure of FTO/ZnO/CuSbS2/Back contact. A conversion efficiency of 27.29% (FF=86.97%, Voc=1.15V and Jsc=27.31 mA/cm2 ) and temperature coefficient of -0.0319 %/°C have been found for 2 ?m CuSbS2 absorber layer. Then the effect of BSF on cells stability and performance was analyzed by inserting a SnSe BSF layer in the structure. The designed cell, which has a 100 nm SnSe layer as the BSF and a 2 ?m CuSbS2 absorber, has a higher conversion efficiency of 28.13% (FF=87.18%, Voc=1.17V and Jsc=27.59 mA/cm2 ) and a better temperature coefficient of -0.0242 %/°C.

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