Research Article
Effects of CdS Buffer Layers on Photoluminescence Properties of Cu2ZnSnS4 Solar Cells
Figure 3
EQE of a CdS/CZTS solar cell based on the Cu-poor/Zn-rich CZTS layers examined in this work. The determination of the absorber bandgap obtained by interpolation of the low energy part of the EQE curve is reported in the inset.