水热法制备ZnO及其光致发光  

Hydrothermal synthesis of ZnO and its photoluminescence

作　　者：赵伟[1] 朱刚强[1] 周剑平[1] 过阳阳[1] 张正龙[1] 边小兵[1] 刘鹏[1] 郑海荣[1] 

机构地区：[1]陕西师范大学物理学与信息技术学院,陕西西安710062

出　　处：《功能材料》2010年第1期8-11,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50772065)

摘　　要：以氯化锌做为原料,氢氧化钠为矿化剂,在温度180℃、反应15h的条件下,利用水热法制备ZnO粉体。通过X射线衍射、扫描电镜和光致发光谱表征其晶体结构、微观形貌和光学性能。表征结果表明,随着反应溶液pH值的增大,ZnO的微观结构逐渐由一维棒状变成三维花状。对三维花状ZnO的形成机理进行了讨论,研究了pH对ZnO粉体的光致发光的影响。Zinc oxide powders were hydrothermally synthesized at 180℃ for 15h by using ZnCl2 as starting materials,NaOH as a mineralizer.The crystal structure,morphology and optical property of the final products were characterized by X-ray diffraction,scanning electron microscopy and photoluminescence spectra.The results show that ZnO morphology change from one-dimension rods to three-dimension flowers with increasing pH from 9 to 14.The formation mechanism of the ZnO flowers was proposed and the optical properties of the final products synthesized in different pH were discussed.

关 键 词：ZNO 水热法 微观结构 光致发光 

分 类 号：O782[理学—晶体学]