发光学报2012，Vol.33Issue(8)：840-844,5.DOI:10.3788/fgxb20123308.0840
pr3+ 激活的CaMoO4红色荧光粉的发光性质
Luminescent Properties of Pr3+-activated CaMoO4 Red Phosphors
摘要
Abstract
Red-light-emitting phosphors of Pr3+ activated Ca1-χPrχ.MoO4 were synthesized by high temperature solid state reaction. The luminescence spectra of samples indicate that under the excitation of 453 nm, all samples produce red emission peak at 654 nm corresponding to the characteristic transition of Pr + (3P0→-3F2). The influence of Pr3+ doping mole fraction (x) on the luminescent intensity of samples was analyzed. The optimum doping mole fraction of Pr3+ was x = 0. 01. In order to further improve the luminescent efficiency, two charge compensation approaches were applied; (1) two Ca2 + ions were replaced by one Pr3 + ion and one M+ ( M = Li, Na) ion and (2) three Ca2+ ions were replaced by two Pr3+ ions. It is found that both charge compensation approaches can obviously improve the red luminescent intensity. In particular the relative emission intensity of Ca0 98Pr0 01Li0 01MoO4 reached more than 3. 17-fold as compared with that of the sample without the charge compensation.关键词
CaMoO4/pr3+离子/发光/电荷补偿Key words
Ca2 MoO4 / Pr3 + ion/ luminescence/ charge compensation分类
数理科学引用本文复制引用
张丹丹,石士考,罗鸣,刘行仁,周济..pr3+ 激活的CaMoO4红色荧光粉的发光性质[J].发光学报,2012,33(8):840-844,5.基金项目
国家自然科学基金(20971035) （20971035）
河北省自然科学基金(08B012,B2010000370) （08B012,B2010000370）
河北省教育厅基金(2009136)资助项目 （2009136）
