%0 Journal Article
%T Study of concentration dependence of luminescent properties for Eu3+ doped CaWO4 red phosphors<br>Eu3+掺杂CaWO4红色荧光粉发光性质的浓度依赖关系研究
%A Meng Qing-Yu
%A Zhang Qing
%A Li Ming
%A Liu Lin-Feng
%A Qu Xiu-Rong
%A Wan Wei-Long
%A Sun Jiang-Ting
%A <br>孟庆裕
%A 张庆
%A 李明
%A 刘林峰
%A 曲秀荣
%A 万维龙
%A 孙江亭
%J 物理学报
%D 2012
%I 
%X Eu3+ doped CaWO4 phosphors of different concentrations are prepared by a co-precipitation method.The X-ray diffraction patterns and field emission scanning electron microscopy images are investigated.The excitation spectra,emission spectra and the curves of fluorescence decays of the samples are measured.The Judd-Ofelt（J-O） parameters,quantum efficiencies of the 5D0 level of Eu3+ and color coordinates are calculated.The dependences of relative intensity of charge transfer band,J-O parameter and quantum efficiency on doping concentration are discussed.The photoluminescence properties of Eu3+ doped CaWO4 luminescent material are studied.The results indicate that the 616 nm red emission of Eu3+→5D0→7F2 transition can be effectively excited by 394.5 nm and 465 nm with high excitation efficiency and the concentration quenching is high.So the CaWO4:Eu red phosphor may have a potential application for white light emitting diode.
%K concentration dependence
%K red phosphors
%K Eu3+
%K tungstate<br>浓度依赖
%K 红色荧光粉
%K Eu3+
%K 钨酸盐
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=47EA7CFDDEBB28E0&jid=29DF2CB55EF687E7EFA80DFD4B978260&aid=78F360FC29C47911F966C2FE7833A8BE&yid=99E9153A83D4CB11&vid=1D0FA33DA02ABACD&iid=F3090AE9B60B7ED1&sid=AB4CFDC1028FFDE3&eid=AB4CFDC1028FFDE3&journal_id=1000-3290&journal_name=物理学报&referenced_num=0&reference_num=22