Efficiency enhancement of novel CNTS/ZnS/Zn (O, S) thin film solar cell

Cu2NiSnS4 is non-toxic earth abundant material and a promising quaternary semiconductor compound. It is conspicuous and suitable class of material for the manufacturing of high efficiency, low cost and sustainable thin film photovoltaic cell. A novel structure CNTS/ZnS/Zn(O,S)/FTO is proposed in this work for the efficiency enhancement of CNTS based photovoltaic cell. Up till now there has been no model proposed to use Zn(O,S) as electron transport layer for CNTS based device. In this work we proposed for the first time a novel Zn(O,S) electron transport layer for the efficiency enhancement of CNTS thin film photovoltaic cell. Device modeling is performed on solar cell capacitance simulator (SCAPS) program under 1.5 A M illumination spectrum. Promising optimized functional parameters had been achieved with the conversion efficiency of 17.06%, open circuit voltage (Voc) of 664mV, short-circuit current (Jsc) of 31.19 mA/cm2 and fill factor (FF) of 82.37%. The above results will give an imperative guideline for the feasible fabrication of high efficiency CNTS based photovoltaic cells.