Luminescence Properties and Energy Transfer of Sm3+-Eu3+ co-doped Gd2(MoO4)3 Red Phosphors
The red phosphor Gd2(MoO4)3:Eu3+,Sm3+ was prepared by sol-gel method.The morphology and luminescence characteristics of the phosphor particles were characterized by scanning electron microscopy (SEM) and fluorophotometer.The results showed that the phosphor had the advantages of small particle size and the uniform particle size distribution.The luminescence properties of Eu3+ ions in Gd1.37Euo.6Sm0.03(MoO4)3 could be evidently improved by co-doping of Sm3+ ions,which was due to the efficient energy transfer process from Sm3+ to E ions.The chromaticity coordinates for Eu3+ doped Gd1.4Euo.6(MoO4)3 and Eu3+ and Sm3+ codoped Gd1.37Euo.6Sm0.o3(MoO4)3,are(0.662,0.329) and (0.668,0.331),respectively.Because of the introduction of Sm3+ into the red-emitting phosphors,the chromaticity coordinates of Gd1.37Euo.6Sm0.03(MoO4)3 phosphor is closer to the standard values of International chromaticity coordinates(0.67,0.33).So Gd1.37Euo.6Sm0.o3(MoO4)3 shows good prospect for red phosphors of white LED.
Red phosphor Sol-gel method Energy transfer
Xiu Juan Geng Yong Jie Chen Yan Wen Tian Lin Jiu Xiao
School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China;Shenyang University Shenyang University of Chemical Technology,Shenyang 110142,China School of Materials and Metallurgy,Northeastern University,Shenyang 110004,China
国际会议
广州
英文
931-934
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）