Effects of Li or Li/Mg dopants on the orientation of ZnO nanorods prepared by sol-gel method

摘要

The ZnO nanorods have been prepared on lime-glass substrate by doping Li~+ and/or Mg~(2+) using a sol-gel method. The results show that the degree of C-orientation of Li/Mg doped ZnO nanorods is much high compared with that of Li doped and undoped ones. The individual nanorod exhibits an asymmetric hexagonal morphology with uniform diameter (50-80 nm) along its length (300 nm), and few abnormal ZnO rods (with about 3 μm length) can be observed on the surface in the SEM images. The growth mechanism of ZnO nanorods has also been discussed.