Figure 3From: Effect of ZnO:Cs2CO3 on the performance of organic photovoltaicsSurface topography of ZnO and ZnO:Cs 2 CO 3 films on ITO. AFM images of (a) ZnO, (b) ZnO:Cs2CO3 (3:1), (c) ZnO:Cs2CO3 (2:1), (d) ZnO:Cs2CO3 (1:1), (e) ZnO:Cs2CO3 (1:2), and (f) ZnO:Cs2CO3 (1:3).Back to article page