| 一种新型的白光LED用绿色荧光粉Ca_8MgLu(PO_4)_7∶Tb~(3+) |
| |
| 引用本文： | 谢飞燕,董志月,刁贵强,刘必富,蔡婉敏.一种新型的白光LED用绿色荧光粉Ca_8MgLu(PO_4)_7∶Tb~(3+)[J].发光学报,2015,36(10):1132-1136. |
| |
| 作者姓名： | 谢飞燕 董志月 刁贵强 刘必富 蔡婉敏 |
| |
| 作者单位： | 1. 惠州学院 化学工程系, 广东 惠州 516007;
2. 生物无机与合成化学教育部重点实验室 中山大学化学与化学工程学院, 广东 广州 510275 |
| |
| 基金项目： | 广东省自然科学基金 (2014A030310130); 广东省教育厅基金 (2014KQNCX211); 惠州学院大学生创新项目资助 |
| |
| 摘 要： | 采用高温固相法合成一种单一纯相绿色荧光粉Ca8Mg Lu(PO4)7∶Tb3+,通过X射线衍射(XRD)、荧光光谱(PLE,PL)和荧光寿命曲线研究了Ca8Mg Lu(PO4)7∶Tb3+的发光性能。Ca8Mg Lu(PO4)7∶Tb3+能被378nm的近紫外光激发,Tb3+发生5D4-7F5跃迁发出绿光,色坐标为(0.324,0.592)。Ca8Mg Lu(PO4)7∶Tb3+的量子效率可达84%,热猝灭性能良好:在150℃和200℃的发光强度积分分别是25℃的90.71%和86.36%。研究结果表明Ca8Mg Lu(PO4)7∶Tb3+是一种理想的适于NUV-LED芯片激发的白光LED用绿色荧光粉。
|
| 关 键 词： | 荧光粉 白光LED Ca8MgLu(PO4)7:Tb3+ |
| 收稿时间： | 2015-07-13 |
A Novel Green Phosphor Ca8 MgLu(PO4) 7:Tb3+ for Near Ultraviolet White Light-emitting Diodes |
| |
| XIE Fei-yan,DONG Zhi-yue,DIAO Gui-qiang,LIU Bi-fu,CAI Wan-min.A Novel Green Phosphor Ca8 MgLu(PO4) 7:Tb3+ for Near Ultraviolet White Light-emitting Diodes[J].Chinese Journal of Luminescence,2015,36(10):1132-1136. |
| |
| Authors: | XIE Fei-yan DONG Zhi-yue DIAO Gui-qiang LIU Bi-fu CAI Wan-min |
| |
| Institution: | 1. Department of Chemical Engineering, Huizhou University, Huizhou 516007, China;
2. Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275, China |
| |
| Abstract: | A green-emitting phosphor, Ca8MgLu(PO4)7:Tb3+, was synthesized by a solid-state reaction. The photoluminescence excitation (PLE), emission (PL) spectra, and decay curves were measured to investigate photo-luminescent property of Tb3+ in Ca8MgLu(PO4)7 host. The excitation and emission spectra indicate that the phosphors can be effectively excited by the near ultraviolet (NUV) light (378 nm) and emit strong green emission of Tb3+ 5D4-7F5 transition. The CIE chromaticity (x, y) of Ca8MgLu(PO4)7:Tb3+ is (0.324, 0.592). The internal quantum efficiency of Ca8MgLu(PO4)7:Tb3+ is as high as 84% under the excitation of 378 nm. The phosphors show a good thermal stability at high temperature (200 ℃), and the emission intensity at 150 ℃ and 200 ℃ is 90.71% and 86.36% of that at 25 ℃. The results indicate that Ca8MgLu1-x(PO4)7:xTb3+ can be served as a potential green-emitting phosphor candidate for NUV LED application. |
| |
| Keywords: | phosphors WLED Ca8MgLu(PO4)7:Tb3+ |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《发光学报》浏览原始摘要信息 |
| 点击此处可从《发光学报》下载免费的PDF全文 |
|
