Modelling of Highly Efficient Copper Zinc Tin Sulphide (CZTS) Solar Cell for Performance Improvement

Low stability, less efficiency and high cost material of the solar cell make its commercialization and manufacturing less point of attention for many researcher and industrial investor. However, the main focus of this work is to compare the investigated material i.e., CZTS with existing materials i.e., amorphous, CIGS and perovskite solar cells with respect to efficiency, cost and stability as it is one of the keen interests in photovoltaic (PV) research field. In this paper, we have presented a highly efficient, highly stable and less costly thin film solar cell with novel material i.e., Copper Zinc Tin Sulphide (CZTS) that holds a conversion efficiency, η of 18.68% with supporting short current density, Jsc= 25.258mA/cm
²
, open circuit voltage, V
_oc
=0.8787 V and fill factor, FF=84.17%. Different window layer materials along with various buffer layer materials is tested and founded that fluorine tin oxide (FTO) and Indium sulphide (In2S3) are best performing candidates among all other materials. Moreover, effect of high temperature on CZTS electrical parameter is analyzed and drop in the η is observed when the temperature of the device is increased.