High-Efficiency SbSe Solar Cells Modified by Potassium Hydroxide.

Antimony selenide (SbSe) has attracted considerable attention for its simple composition, nontoxic nature, and abundance. However, the efficiency of SbSe solar cells is limited by the low carrier concentration and high recombination rate at the interface between SbSe and the Au layer. For this paper, the KOH solution used as the etchant was used to increase the efficiency of SbSe solar cells.