Figure 2
From: Improved conversion efficiency of amorphous Si solar cells using a mesoporous ZnO pattern
SEM images of the layers. SEM images of (a) flat mesoporous ZnO layer, (b) mesoporous ZnO pattern, and (c) wet-etched AZO (insets: top views). (d-f) AFM images of a 20 × 20 μm area of the substrates.
