Improving the luminescence properties of Ba_3Eu(PO_4)_3 by doping Sm^(3+) as sensitizer  

作　　者：尤建琦 陆伟 齐帅 李亚民 石献 田植 王志军 张坤 庞立斌 

机构地区：[1]College of Physics Science & Technology, Hebei University [2]Tangshan Vocational & Technical College [3]Industrial & Commercial College, Hebei University [4]Department of Foreign Language Teaching and Research, Hebei University

出　　处：《Optoelectronics Letters》2015年第6期430-433,共4页光电子快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.50902042);the Natural Science Foundation of Hebei Province in China(Nos.A2014201035 and E2014201037);the Education Office Research Foundation of Hebei Province in China(Nos.ZD2014036 and QN2014085);the College Students Innovation and Entrepreneurship of Hebei University in China(Nos.2014041 and 2015063)

摘　　要：For enhancing the emission intensity and broadening the excitation region of Ba3Eu（PO4）3 （BEP）, Sm3＋ is doped as sensitizer in this paper. BEP：Sm3＋ can produce an obvious red emission at near ultraviolet （n-UV） radiation. An effec- tive energy transfer from Sm3＋ to Eu3＋ is proved. The commission international de I＇Eclairage （CIE） chromaticity co- ordinates of BEP：Sm3＋ locate at red region. When the environment temperature is 150 ℃, the emission intensity of BEP：0.10Sm3＋ is decreased to 76% of the initial one at room temperaatre, and the activation energy is calculated to be 0.164 eV, which can prove the good thermal stability of BEP：Sm3＋. The results indicate that BEP：Sm3＋ may have po- tential applications in white light emitting diodes （LEDs）.

关 键 词：敏化剂 发光性能 掺杂 白光发光二极管 发射强度 BEP 能量转移 色度坐标 

分 类 号：TN312.8[电子电信—物理电子学] TQ422[化学工程]