Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12

doi:10.1149/2.009201jss

CORC > 北京大学 > 化学与分子工程学院

	Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12
	Shao, Li-Ming ; Jing, Xi-Ping
刊名	ecs journal of solid state science and technology
	2012
关键词	LIGHT-EMITTING-DIODES CONVERSION PHOSPHORS GLASS
DOI	10.1149/2.009201jss
英文摘要	Tb3+-Yb3+, Ce3+-Yb3+ and Ce3+-Tb3+-Yb3+ co-doped yttrium aluminum garnets (Y3Al5O12, YAG) were synthesized by conventional solid-state reactions. Upon excitations of Tb3+ ions with UV photon at 274 nm and Ce3+ ions with blue photon at 460 nm, Yb3+ emissions are observed in near-infrared region with the main peak located at 1029 nm. Based on the variations of the decay curves of Tb3+ and Ce3+ as well as energy transfer efficiencies (eta) for Tb3+ -> Yb3+ and Ce3+ -> Yb3+ processes and quantum efficiency (Q) of Yb3+ emission with Yb3+ content, the energy transfer mechanisms for the Tb3+ -> Yb3+ and Ce3+ -> Yb3+ process were discussed. Near-infrared quantum cutting process (NIR QC) is realized for the Tb3+ -> Yb3+ transfer, while for the Ce3+-Tb3+ transfer, a charge transfer process Ce3+ + Yb3+ -> Ce4+ + Yb2+ occurs, by which the Yb3+ emission is increased, but the Ce3+ emission is quenched. These materials may be potentially used in luminescent solar concentrators (LSC) to increase the efficiency of Si-based solar cells. (C) 2012 The Electrochemical Society. All rights reserved.; Materials Science, Multidisciplinary; Physics, Applied; SCI(E); 0; ARTICLE; 1; R22-R26; 1
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/313117]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Shao, Li-Ming,Jing, Xi-Ping. Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12[J]. ecs journal of solid state science and technology,2012.
APA	Shao, Li-Ming,&Jing, Xi-Ping.(2012).Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12.ecs journal of solid state science and technology.
MLA	Shao, Li-Ming,et al."Near-Infrared Luminescence of Tb3+-Yb3+ and Ce3+-Yb3+ Co-Doped Y3Al5O12".ecs journal of solid state science and technology (2012).