Growth Behaviors of ZnO Nanorods Grown with the Sn-Based Bilayer Catalyst-Covered Substrates
Figure 3
Surface morphologies of ZnO grown at 700°C for 2 h on (a) Al-, (b) Ni-, (c) In-, and (d) Sn-sputtering coated substrates by thermal evaporation with a Zn mixture of Zn and ZnO in a weight ratio of 1 : 1.