Effects of Mg Incorporation on Microstructure and Optical Properties of ZnO Thin Films Prepared by Sol-gel Method

Rui Ding1),Chunxiang Xu1),Baoxiang Gu1),Zengliang Shi1),Haitao Wang2),Long Ba2) and Zhongdang Xiao2) 1) Advanced Photonics Center,School of Electronic Science and Engineering,Southeast University,Nanjing 210096,China 2) State Key Laboratory of Bioelectronics,Southeast University,Nanjing 210096,China

摘 要：Well-crystallized MgZnO alloy thin films with hexagonal wurtzite structure were fabricated by sol-gel method. With the band gap increases, the surface roughness and the grain size reduces. It is worth noting that the intensity of the band-edge luminescence of Mg doped films enhances with the increase of the Mg content. The microstructure and photoluminescence mechanism have been discussed based on X-ray diffraction patterns, atomic force microscopy images, ultraviolet-visible absorption spectra, photoluminescence spectra and Fourier transform infrared spectra.

关键词：