Figure 3From: Nanoscale investigation of surface potential distribution of Cu2ZnSn(S,Se)4 thin films grown with additional NaF layers Topography (a) 0 nm (b) 15 nm (c) 30 nm of NaF and surface potential images (d) 0 nm (e) 15 nm (f) 30 nm of NaF of the CZTSSe thin-films. The grain size increase with increasing NaF layer and the potential value is also enhanced.Back to article page