摘要
以Zn(NO3)2.2H2O、CO(NH2)2、Eu(NO3)3.6H2O和LiNO3.2H2O为原料,采用均相共沉淀制备了粒径为20～40nm的Eu,Li共掺的纳米ZnO荧光粉,用SEM、XRD、TG-DSC、FL等检测手段对样品进行了表征。结果表明:样品的荧光性能与热处理温度及Eu,Li的掺杂比例密切相关,掺杂的ZnO荧光粉呈现出Eu的特征发射,其发射主峰位于611nm处。
The nano-phosphor powders of Eu,Li co-doped ZnO were prepared by homogeneous co-precipitation and thermal decomposition method using Zn（NO3）2·2H2O,CO（NH2）,Eu（NO3）3·6H2O and LiNO3·2H2O as raw materials. The characteristics of samples were investigated by means of TG-DSC,XRD,SEM,FL. The results showed that the samples exhibited normal size distribution,whose size was about 20-40 nm. The photoluminescence intensity of samples was interrelated with thermal decomposition temperature,ratio of Li and Eu. The maximum emission spectra peak of samples was at λem=611 nm with 463 nm excitation,corresponding to ^5D0→^7F2 transition of Eu.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2009年第5期1211-1215,共5页
Journal of Synthetic Crystals
基金
国家自然科学基金(No.50802078)
西南科技大学青年预研基金项目(06ZX3129)
关键词
均相共沉淀
ZNO
纳米
荧光
homogeneous co-precipitation ZnO nanopowders photo luminescence
