CHEN Yichuan HU Yuehu ZHANG Xiaohua YANG Feng CHEN Xinhua CHEN Jun

（School of Mechanical and Electronic Engineering, Jingdezhen Ceramic Institute, Jingdezhen Jiangxi 333001, China）

Abstract: Undoped ZnO and Al doped ZnO nanocrystals were synthesized by the methanol alcoholysis method at 130℃ .Structure, morphology and optical properties of ZnO nanocrystals were characterized using X-ray diffraction, transmission electron microscopy (TEM), Fourier transform infrared (FTIR) and photoluminescence (PL) spectra. The results show that ZnO nanocrystals can be obtained in methanol solution at low temperature (130℃ ). FTIR spectra show that ZnO nanocrystals synthesized by the methanol alcoholysis include a little organic impurity. PL spectra reveal that pure ZnO and Al doped ZnO nanocrystals have a blue band emission at 440 nm and a green band emission at 520 nm and 530 nm, respectively. Compared with the pure ZnO nanocrystals, the Al doping improves the luminescent properties.

Key words: ZnO crystals; alcoholysis method; structure; properties