Chemical vapor deposition-based growth of aligned ZnO nanowires on polycrystalline Zn2GeO4:Mn substrates

ZnO nanowires have been grown on polycrystalline Zn2GeO4:Mn substrates for the first time using a chemical vapor deposition method. Both Zn and ZnO sources were used to supply Zn vapor in the growth process of ZnO nanowires. The Zn2GeO4:Mn substrates were prepared using solid-state ceramic synthesis methods, and average grain sizes of ~1 μm were achieved. The nanowires of diameters in the range of 100–200 nm and length of ~30 μm were observed. …