495752.fig.004a
(a)
495752.fig.004b
(b)
495752.fig.004c
(c)
495752.fig.004d
(d)
Figure 4: Surface morphologies of the etched GZO thin films; (a) as deposited, (b) 0.1%, (c) 0.2%, and (d) 0.5%, respectively.