Growth mechanism and photoluminescences of ZnO nanostructures by sol-gel method

摘要：

Different ZnO nanostructures were synthesized by sol-gel method, and the effects of annealing temperature on the morphologies and optical properties of ZnO nanostructures were investigated in details. The SEM results showed that the sample morphology depended on the annealing temperature and uniform ZnO nanorods formed at 900℃. The ZnO nanorods have a diameter about 200 nm and length up to several micrometers. In addition, the growth mechanism of the ZnO nanorods was discussed. Room temperature photoluminescence measurements under excitation wavelength of 325 nm showed that the ZnO nanostructures sintered at different temperature have an ultraviolet emission peak and a relatively broad visible light emission peak. The decrease of tensile stress resulted in the UV emission peak shifted from 386 to 389nm when annealling temperature rose from 850℃ to 1000℃.

关键词： ZnO nanostructures sol-gel method optical properties

作者: 杨景海 高铭 张永军 杨丽丽

作者单位: 吉林师范大学凝聚态物理研究所,吉林省四平市,136000;中国科学院长春光学机械精密学院激发态重点实验室,长春,130033 吉林师范大学凝聚态物理研究所,吉林省四平市,136000 中国科学院长春光学机械精密学院激发态重点实验室,长春,130033;中国科学院研究生院,北京,100049;吉林师范大学凝聚态物理研究所,吉林省四平市,136000

会议类型: 国际会议

会议名称: 第六届中国国际纳米科技研讨会

会议地点: 成都

会议语种:英文

在线出版日期: 2007-11-19（万方平台首次上网日期，不代表论文的发表时间）