Current Status and Future Prospects of Kesterite Cu2ZnSn(S,Se)4
solar cells, outlining a perspective for the future development of highly efficient CZTSSe thin film solar cells. 1. Introduction To meet the increasing global energy demands to replace traditional fossil fuels, there is a rising interest in thin-film photovoltaic (PV) technology. Among various materials for the thin-film PVs, Cu 2ZnSn(S,Se)