Figure 3From: Improved conversion efficiency of amorphous Si solar cells using a mesoporous ZnO patternFIB-SEM cross-sectional images of a-Si:H thin-film solar cells grown on the following. (a) flat AZO, (d) flat mesoporous ZnO layer, (b and e) patterned mesoporous ZnO, or (c and f) wet-etched AZO substrates.Back to article page