130716.fig.007a
(a)
130716.fig.007b
(b)
130716.fig.007c
(c)
Figure 7: SEM micrographs of AAO films with ITO conductive layer (sample B) at various bias voltages: (a) 80 V, (b) 100 V, and (c) 120 V. After anodic oxidation, pore-widening treatment was performed in 6 wt% H3PO4 at 45°C.