Abstract
The ZnO nanorods on aluminum doped ZnO thin films were synthesized by both chemical bath deposition and multi-annealing methods. The ZnO nanorods were vertically aligned on aluminum doped ZnO substrates in both methods, which was attributed to the good crystallinity and crystal growth direction of underneath aluminum doped ZnO film. A high transmittance of 75% was obtained from both of the synthesized ZnO nanorods. The photoluminescence of ZnO nanorods obtained by multi-annealing method had strong bluegreen emission. However, a strong orange-red emission was observed from ZnO nanorods by chemical bath deposition.
