Band alignment of SnS/Zn(O,S) heterojunctions in SnS thin film solar cells
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Enhancing the efficiency of SnS solar cells via band-offset engineering with a zinc oxysulfide buffer layer
SnS is a promising earth-abundant material for photovoltaic applications. Heterojuction solar cells were made by vapor deposition of p-type tin(II) sulfide, SnS, and n-type zinc oxysulfide, Zn(O,S), using a device structure of soda-lime glass/Mo/SnS/Zn(O,S)/ZnO/ITO. A record efficiency was achieved for SnS-based thin-film solar cells by varying the oxygen-to-sulfur ratio in Zn(O,S). Increasing ...
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