氮化镓粉末的溶胶-凝胶法制备及其结构分析  

Structure analysis and synthesis of GaN powder by sol-gel method

作　　者：王珊珊[1] 王雪文[1] 赵武[1] 张志勇[1] 

机构地区：[1]西北大学信息科学与技术学院,陕西西安710127

出　　处：《西北大学学报（自然科学版）》2008年第3期379-382,共4页Journal of Northwest University（Natural Science Edition）

基　　金：西北大学博士科研启动基金资助项目(OKYDF075)

摘　　要：目的采用一种低成本、易操作的溶胶-凝胶法制备高质量的氮化镓粉末。方法以氧化镓为镓源、柠檬酸为络合剂制备出前驱物溶胶,再将其在氨气气氛中氮化得到氮化镓粉末。结果X射线衍射(XRD)、透射电镜(TEM)对其进行分析,结果表明该粉末是六角纤锌矿结构的纳米GaN粉末;且由傅立叶红外光谱(FTIR)测出产物的吸收峰与氮化镓的横向光学晶格声子模式一致,由光致发光(PL)谱得到两条光致发光峰表明了所制备的GaN具有很好的光学性能。结论多种测试结果表明,用溶胶-凝胶法制备的氮化镓纳米粉体具有良好的性能。Aim To prepare Gallium nitride（GaN） powder successfully by sol-gel method,which is low cost and easily operated.Methods The precursor is synthesized when Gallium sesquioxide and citric acid are used as Ga source and complexing agent respectively,and a brown powder is formed after the precursor is nitridized in alkaline air.Results Then the microstructures of the powder are researched with XRD,TEM and FTIR,the results show that the powder is nano-crystal GaN with hexangular wurtzite structure.Finally,the optic characteristics of the powder is tested in PL,the result reveals that the GaN powder has two luminous zones.Conclusion The GaN powder prepared by sol-gel method has quality performance.

关 键 词：氮化镓 溶胶-凝胶法 镓柠檬酸络合物 

分 类 号：O648[理学—物理化学]