By comparing optical spectral results of both Sn-rich and Sn-poor Cu2ZnSnS4(CZTS)with the previously calculated defect levels,we confirm that the band-tail states in CZTS originate from the high conce
Kesterite-based Cu2ZnSn(S,Se)4 semiconductors are emerging as promising materials for low-cost,environment-benign,and high-efficiency thin-film photovoltaics.
A processing based on CZTS or CZTSe quaternary target sputtering has been developed as alternative one [1-2].As the as-deposited precursor is usually crystallinity-poor and sulfur-poor,heat treatment,