Investigation of the Optimal Parameters in Hydrothermal Method for the Synthesis of ZnO Nanorods

Figure 2

Surface morphologies of the deposited ZnO films synthesized at different faces and time and under different magnifications. Down face (a) 1 h, (b) 3 h, and (c) 5 h; up face (d) 5 h, respectively.

(a)

(b)

(c)

(d)