Fig. 6From: Solution-Processed Cu2ZnSn(S,Se)4 Thin-Film Solar Cells Using Elemental Cu, Zn, Sn, S, and Se Powders as Source a J–V curves of the best CZTSSe solar cell in the dark and under simulated solar light (AM 1.5 G) illumination. b EQE spectrum of the corresponding device; inset: the band gap was determined by plotting [E × ln(1 − EQE)]2 versus E curvesBack to article page