发光学报2011，Vol.32Issue(10)：1030-1035,6.DOI:10.3788/fgxb20113210.1030
Ce3+,Tb3+共掺BaYF5微晶玻璃的光学特性
Optical Properties of Ce3+, Tb3+ Co-doped BaYF5 Glass Ceramics
摘要
Abstract
A new Ce3 +/Tb3 + co-doped BaYF5 glass ceramic was prepared by high temperature melting. The X-ray diffraction spectra, excitation spectra and emission spectra were measured. The results indicate the BaYF5 nanocrystalline phase exists in the glass matrix. Based on the Scherrer equation, the average size about 27 nm of BaYF5 nanocrystalline was calculated. The intense blue emission band (425 nm) assigned to 5d→2F5/2 and 5d→2F7/2 transitions of Ce3 + and blue emission(487 nm) , green emission (542 nm) , orange emission (582 nm) and red emission (620 nm) assigned to 5D4→7FJ(J =6,5,4,3) transitions of Tb 3 + ions, respectively, were observed at room temperature under 338 nm excitation in the glass ceramics. By adjusting the doped concentration of Ce3 + and Tb3 + , the chromaticity coordinate of the glass ceramic is measured to be (0. 287, 0. 336). The energy transfer between Ce 3 + and Tb 3 + was analysised systematically. The results indicate that Ce3 + / Tb3 + co-doped BaYF5 glass ceramics is a potential matrix material for white LED.关键词
Ce3 +/Tb3共掺/微晶玻璃/能量传递/白光LEDKey words
Ce 3 +/Tb 3 + co-doped/ glass ceramics/ energy transfer/ white light LED分类
数理科学引用本文复制引用
江青云,李晨霞,叶仁广,华有杰,徐时清..Ce3+,Tb3+共掺BaYF5微晶玻璃的光学特性[J].发光学报,2011,32(10):1030-1035,6.基金项目
国家自然科学基金(11004177和51072190) （11004177和51072190）
教育部新世纪人才计划(NCET-07-0786) （NCET-07-0786）
浙江省自然科学基金(Z4100030和Y4100571)资助项目 （Z4100030和Y4100571）
