938370.fig.003
Figure 3: XRD patterns of (a) as-prepared precipitates collected from the solution; (b) products grown on ZnO buffer layer as the ethanol-water volume ratio of 0 : 1; (c) as-prepared precipitates collected from the solution; (d) products grown on a substrate as the ethanol-water volume ratio of 1 : 0. FE-SEM images of (e) products grown on ZnO buffer layer as the ethanol-water volume ratio of 0 : 1; (f) FE-SEM image of products grown on a substrate as the ethanol-water volume ratio of 1 : 0.