发光学报2012，Vol.33Issue(4)：371-376,6.DOI:10.3788/fgxb20123304.0371
白光LED用Ce3+/Sm3+共掺玻璃和微晶玻璃的发光特性及能量传递研究
Luminescence and Energy Transfer of Ce3+/Sm3+Co-doped Glass and Glass Ceramics Containing Zn2 SiO4Nanocrystals for White LEDs
摘要
Abstract
A series of transparent Ce3 +/Sm3 + co-doped glass ceramics were prepared by high temperature melting,and their luminescence properties were studied.In the glass ceramics,Ce3+ ions have shown efficient broadband blue emission due to the 4f-5d transition,and Sm3+ ions have shown bright orange-red luminescence resulting from the 4Gs/2→6HJ (J =5/2,7/2,9/2,11/2) transitions.By adjusting the doped concentration of Ce3 + and Sm3+ ions,the chroma of the samples varied gradually.When the mole fraction of CeO2 and Sm2O3 was 1∶ 1,the white light luminescence glass ceramic with the chromaticity coordinate (0.315,0.296) was prepared.The energy transfer from Ce3 + to Sm3+ ions were investigated by spectra properties and fluorescence decay curves,energy transfer efficiency is about 20％ in the SAZKNGC0.6S0.6 glass ceramics.The results indicate that Ce3 +/Sm3 + co-doped glass ceramics containing β-Zn2SiO4 are potential matrix materials for white LEDs.关键词
Ce3+/Sm3+离子/发光/能量传递/微晶玻璃/白光LEDKey words
Ce3 +/Sm3 + ions/luminescence/energy transfer/glass ceramics/white LED分类
数理科学引用本文复制引用
江青云,李晨霞,叶仁广,陈鸿,华有杰,邓德刚,赵士龙,徐时清..白光LED用Ce3+/Sm3+共掺玻璃和微晶玻璃的发光特性及能量传递研究[J].发光学报,2012,33(4):371-376,6.基金项目
国家自然科学基金(51072190) （51072190）
浙江省自然科学基金(Z4100030,Y4100571)资助项目 （Z4100030,Y4100571）
