发光学报Issue(1)：36-40,5.DOI:10.3788/fgxb20123301.0036
LiAl5O8∶Tb3+绿色荧光粉的合成及发光性能
Synthesis and Luminescence Properties of LiAl5 O8∶ Tb3 + Green Phosphor
摘要
Abstract
Trivalent terbium (Tb3 + ) doped lithium aluminate(LiAl5O8) was synthesized by sol-gel method and the luminescent properties were investigated in this paper. The X-ray diffraction patterns (XRD) showed that the phosphors sintered at 750 t for 2 h were pure UA15O8 phase. The excita tion spectrum consisted of a broad band,in which the higher energy peaks located at 231 nm. The emission spectrum was composed of four narrow bands and the strongest emission peak was located at 542 nm, corresponding to the5D4→7F5 transition of Tb3+. The appropriate doping molar fraction of Tb3 + was 0.01 for the 542 nm emission. The effect of amount of Tb3 + doping content, the compensa tors ( Li+ ) and flux ( H3 BO3) on the emission intensity of the phosphor were also studied. The re sults show that the emission intensity can be controlled by the above factors, and the intensity can be enhanced by selecting the prime optimum conditions.关键词
Tb3+/铝酸锂/溶胶-凝胶法/绿色荧光Key words
Tb3+ / lithium aluminate/ sol-gel method/ green phosphor分类
数理科学引用本文复制引用
谢礼梅,杨定明,魏乐,胡亚敏..LiAl5O8∶Tb3+绿色荧光粉的合成及发光性能[J].发光学报,2012,(1):36-40,5.基金项目
国防基础研究项目(B312011001) （B312011001）
西南科技大学博士基金(08zx0103)资助项目 （08zx0103）
