Fabrication and Characterization of Well-Aligned Zn_1-xMn_xO Nanorods

Well-aligned Zn_1-xMn_xO nanorods have been synthesized successfully on bare silicon substrates by a simple evaporation method without using any catalyst. X-ray diffraction and electron microscopy studies demonstrate that the as-grown nanorods are of single wurtzite phase with a preferential growth direction along their c-axes. Quantitative energy-dispersive spectrum analysis reveals that the concentration of manganese is around 4 at.%. Magnetic measurements show the single-phase Zn_1-xMn_xO nanorod arrays exhibiting the paramagnetic behaviour. Photoluminescence spectra demonstrate that the Zn_1-xMn_xO nanorods preserve ultraviolet emission at room temperature.