Zn_(1-x)Mg_xO的溶胶凝胶法合成及其特性研究  

Sol-gel routes to the synthesis of Zn_(1-x)Mg_xO powder

作　　者：宁光辉[1] 赵晓鹏[1] 

机构地区：[1]西北工业大学电流变技术研究所,陕西西安710072

出　　处：《功能材料》2004年第3期328-329,332,共3页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(59832090);杰出青年基金资助项目(50025207);西北工业大学博士创新基金资助项目(200241)

摘　　要：　由溶胶凝胶法、利用草酸盐在水相中合成了干凝胶前体粉末,经过热处理得到了纳米Zn1-xMgxO(x≤0.15)粉体;XRD表明所制得的材料具有ZnO的六方晶系结构;经UV Vis分析,比较了量子尺寸的ZnO与热处理的ZnO和Mg掺杂的ZnO及其混合溶胶的紫外吸收差异;通过Mg的掺杂,使ZnO的禁带宽度从3.31eV调节至3.65eV。Zn1-xMgxO (x&le0.15) powders were obtained by annealing their precursors, which were prepared in water by the simple sol-gel method. The structure of powders was characterized by X-ray diffraction. XRD shows that the maximum doping content of magnesium is 15% (mol). Optical absorption measurements of the colloid of ZnO/Zn1-xMgxO powders were carried out by UV-Vis spectra. Doping Mg can increase the ultraviolet transmissivity of the ZnO powder. The band-gap of ZnO is also increased from 3.31 eV to 3.65 eV by doping 15% MgO content.

关 键 词：氧化锌 氧化镁 掺杂 粉体 

分 类 号：O647.11[理学—物理化学]