Dynamic and Steady-State Investigation of the Band Energy Distributions and Electronic Properties of Cu2ZnSnS4 and Cu2ZnSnSe4 Nanocrystals Utilizing Electrochemical Techniques
Abstract:Quaternary chalcopyrite semiconductors, Cu2ZnSnS4 (CZTS) and Cu2ZnSnSe4 (CZTSe), have attracted increasing attention for photovoltaics (PV) application in recent years. However, due to the cell architecture borrowed from CuInxGa(1-x)Se2 (CIGS) devices, the open-circuit voltage is the limiting factor preventing further increases in solar cell efficiency. In the present study, band edge energies of Cu2ZnSnS4 and Cu2ZnSnSe4 were analysed electrochemically in order to show band energy alignments of CZTS and CZTSe.… Show more
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