Figure 2From: Controllable growth of ZnO nanorod arrays with different densities and their photoelectric propertiesThe SEM image of ZnO dot area and nanorod arrays. (a) The SEM image of ZnO dot area with 200 × 200 nm; (c) dot area is 500 × 500 nm; and (e) dot area is 1 × 1 μm. (b) The SEM image of ZnO nanorod arrays with 1-h hydrothermal reaction process on 200 × 200 nm seed areas; (d) on 500 × 500 nm seed areas; and (f) on 1 × 1 μm seed areas.Back to article page