人工晶体学报2012，Vol.41Issue(1)：79-84,6.
MgO相分离对Mgx Zn1-xO纳米粉体结构和光学性能的影响
Effect of MgO Phase Separation on the Structure and Optical Properties of MgxZn1 -xO Nano-powders
摘要
Abstract
MgxZn1-xO (x=0, 0. 1, 0.2, 0.3, 0.4, 0.5) nano-powders were fabricated by sol-gel method. The XRD patterns indicated that the doping critical concentration x is around 0. 13, when the cubic MgO phase was separated from the wurtzite MgxZn1-xO nano-powders under the higher annealing temperature (over 850℃). As the Mg concentration * increasing, the content of MgO phase obeyed exponential growth law. The photoluminescence spectra ( PL) at room temperature exhibited that the MgO phase separation is closely related to the ultraviolet emission ( UV) and the green emission. Along with the appearance of MgO phase, the position of UV peak had blueshift, and intensity of UV emission was depressed and the green emission became stronger with the further increasing of MgO content. The optical transmittance indicated that the band gap of Mg0.1Zn0.9O reached the maximum at x =0. 1, and decreased due to the effect of MgO phase separation.关键词
溶胶-凝胶法/MgxZn1-xO纳米粉体/相分离/光学性能Key words
sol-gel method/MgxZn1-xO nano-powders/phase seperation/optical property分类
数理科学引用本文复制引用
谢海燕,赵小如,段利兵,白晓军,刘金铭,陈帅,史小龙..MgO相分离对Mgx Zn1-xO纳米粉体结构和光学性能的影响[J].人工晶体学报,2012,41(1):79-84,6.基金项目
国家自然科学基金(50872112,51172186) （50872112,51172186）
教育部高等学校博士学科点专项科研基金(20106102120051) （20106102120051）
西北工业大学基础研究基金(NPU-FFR-JC201017) （NPU-FFR-JC201017）
