Catalytic and photoelectrochemical performances of Cu-Zn-Sn-Se thin films prepared using selenization of electrodeposited Cu-Zn-Sn metal precursors

The CZTSe sample has a maximum photo-enhanced current density of 0.41 mA cm−2 at an applied bias of −0.5 V vs. an Ag/AgCl electrode in 0.5 M H2SO4 aqueous solution under illumination. The best photo-conversion efficiency of dye-sensitized solar cells using CZTSe as the counter electrode was 7.98%, with a open-circuit voltage of 0.79 V, a short-circuit current density of 14.74 mA cm−2, and a filled factor of 0.68.236