一种适用于近紫外光LED激发的单一相白光发光粉  

A Single Phase White-light-emitting Phosphor Suitable for UV-LED Excitation

作　　者：严小松[1] 李万万[1] 刘霁[1] 孙康[1] 

机构地区：[1]上海交通大学金属基复合材料国家重点实验室,上海200240

出　　处：《发光学报》2010年第1期39-43,共5页Chinese Journal of Luminescence

基　　金：国家自然科学基金(950902093)资助项目

摘　　要：采用高温固相法合成了一种单一相LiCa3MgV3O12:Eu3+白光发光粉,研究了不同的合成温度和不同Eu3+掺杂浓度等条件对其发光性能的影响。该发光粉在近紫外光激发下呈现由两个谱带组成的发射光谱,分别是峰值为530nm的[VO4]3-的特征宽带和峰值为610nm的Eu3+的特征宽带,通过调整合适的Eu3+掺杂量它们可混合成白光,当Eu3+掺杂摩尔分数为0.01时,发光粉的色品坐标为(x=0.33,y=0.34),显色指数为87。该发光粉可和具有近紫外光发射的InGaN管芯配合制得白光LED,极具应用价值。The luminescence of a single phase material LiCa3MgV3O12： Eu3. are reported and discussed as a potential phosphor excited by UV-LED. The photolumineseenee spectra show two bands with peaks at 530 nm and 610 nm, which are attributed to （VO4） 3- and Eu3＋ ,respectively. By mixing the colors of the two bans, the （x,y） coordinates vary systematically due to the different Eu3＋ concentration. When the tool fraction of Eu3＋ is 0.01, the （x,y） coordinate is （0.33,0.34）. This single phosphor is capable of converting the ultraviolet emission of a UV-LED into white light-emitting.

关 键 词：发光粉 近紫外激发 白光LED 

分 类 号：O482.31[理学—固体物理]