Mechanism of upconversion emission enhancement in Y(3)Al(5)O(12):Er(3+)/Li(+) powders

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	Mechanism of upconversion emission enhancement in Y(3)Al(5)O(12):Er(3+)/Li(+) powders
	M. Z. Yang; Y. Sui; H. W. Mu; S. C. Lu; X. J. Wang; T. Q. Lu
	2011
发表期刊	Journal of Rare Earths
ISSN	1002-0721
卷号	29 期号:11 页码:1022-1025
摘要	Er(3+) and Li(+) codoped Y(3)Al(5)O(12) (YAG) powders were prepared for a systematic investigation of their upconversion emissions. X-ray diffraction (XRD), upconversion emission spectra, pump power dependence, FT-IR spectra and decay time were studied to characterize the samples. With Li+ doping, the upconversion emission intensity of Er(3+) doped YAG powders was obviously enhanced, accompanied with an increase in the ratio of green to red intensity. The enhancement of emission intensity could be attributed to two mechanisms: one was the distortion of local crystal field around Er(3+), and the other was the decrease in the amount of CO(3)(2-) and OH(-) groups. Our results revealed that the latter was the dominant mechanism of the upconversion intensity enhancement in the YAG:Er(3+)/Li(+) powders.
部门归属	[yang mingzhu; mu haiwei] ne petr univ, coll elect sci, daqing 163000, peoples r china. [yang mingzhu; sui yu; wang xianjie; lu tianquan] harbin inst technol, dept phys, ccmst, harbin 150001, peoples r china. [sui yu] acad sinica, int ctr mat phys, shenyang 110015, peoples r china. [lu shuchen] harbin normal univ, dept phys, harbin 150001, peoples r china.;yang, mz (reprint author), ne petr univ, coll elect sci, daqing 163000, peoples r china;yangmingzhu0000@163.com
关键词	Luminescence Optical Materials And Properties Sol-gel Preparation Nanomaterials Rare Earths Nanocrystals Nanophosphors Li++
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/30825
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	M. Z. Yang,Y. Sui,H. W. Mu,et al. Mechanism of upconversion emission enhancement in Y(3)Al(5)O(12):Er(3+)/Li(+) powders[J]. Journal of Rare Earths,2011,29(11):1022-1025.
APA	M. Z. Yang,Y. Sui,H. W. Mu,S. C. Lu,X. J. Wang,&T. Q. Lu.(2011).Mechanism of upconversion emission enhancement in Y(3)Al(5)O(12):Er(3+)/Li(+) powders.Journal of Rare Earths,29(11),1022-1025.
MLA	M. Z. Yang,et al."Mechanism of upconversion emission enhancement in Y(3)Al(5)O(12):Er(3+)/Li(+) powders".Journal of Rare Earths 29.11(2011):1022-1025.