189279.fig.009a
(a)
189279.fig.009b
(b)
189279.fig.009c
(c)
189279.fig.009d
(d)
Figure 9: Surface morphology and cross-sectional images of Al-doped ZnO nanorod arrays as a function of immerse time: ((a)-(b)) 100 min and ((c)-(d)) 150 min.