Figure 2From: Fabrication of nanostructured ZnO film as a hole-conducting layer of organic photovoltaic cellScanning electron microscopy of the ZnO fibrous nanostructure films on the ITO glass. 0.2 (a), 0.4 (b), 0.6 (c), 0.8 (d), and 1.0 M (e) precursor.Back to article page