Strong enhancements of infrared-to-ultraviolet upconversion emissions in Yb3+ and Tm3+ co-doped sub-micron fluoride particles prepared by using pulsed laser ablation

	Strong enhancements of infrared-to-ultraviolet upconversion emissions in Yb3+ and Tm3+ co-doped sub-micron fluoride particles prepared by using pulsed laser ablation
	Qin W. P.; Qin G. S.; Chung Y. W.; Lee Y. I.; Kim C.; Jang K. W.
	2004
发表期刊	Journal of the Korean Physical Society
ISSN	0374-4884
卷号	44 期号:4 页码:925-929
摘要	Five Tm3+-Yb3+ co-doped fluorides, ZnF2, AlF3, PbF2, LiF, and ZAPL (30ZnF(2) - 25AlF(3) - 30PbF(2) - 9.8LiF - 5Yb(2)O(3) - 0.2Tm(2)O(3)) glass, were prepared via solid state reactions. Taking them as targets, we prepared five fluoride particles by using pulsed laser ablation (PLA). Under 980 nm infrared excitation, the upconversion properties of these fluorides (targets and particles) were investigated. All of the PLA particles showed strong ultraviolet upconversion emission. Spectral analysis indicates that rare-earth ions might prefer to occupy the sites surrounded by Pb2+ ions in the ZAPL glass. The populations of the I-1(6) and the (1)G(4) levels (Tm3+) depended on the cation radii in the particles, and the population of the D-1(2) (Tm3+) level remained in a relative narrow range both for the targets and the PLA particles. Prolonged fluorescence lifetimes of the I-1(6), the D-1(2), and the (1)G(4) levels in the PLA particles were observed, which revealed that the energy transfer process from Yb3+ ions to Tm3+ ions was more efficient in the PLA particles than it was in the targets. Lattice defects and structural deformation induced by PLA were found in the ZnF2 particles by using a transmission electron microscope, and the changed fluorescence branching ratios for the transitions from the D-1(2) level was proof of a variation in the crystal structure of the PLA particles.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/34311
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Qin W. P.,Qin G. S.,Chung Y. W.,et al. Strong enhancements of infrared-to-ultraviolet upconversion emissions in Yb3+ and Tm3+ co-doped sub-micron fluoride particles prepared by using pulsed laser ablation[J]. Journal of the Korean Physical Society,2004,44(4):925-929.
APA	Qin W. P.,Qin G. S.,Chung Y. W.,Lee Y. I.,Kim C.,&Jang K. W..(2004).Strong enhancements of infrared-to-ultraviolet upconversion emissions in Yb3+ and Tm3+ co-doped sub-micron fluoride particles prepared by using pulsed laser ablation.Journal of the Korean Physical Society,44(4),925-929.
MLA	Qin W. P.,et al."Strong enhancements of infrared-to-ultraviolet upconversion emissions in Yb3+ and Tm3+ co-doped sub-micron fluoride particles prepared by using pulsed laser ablation".Journal of the Korean Physical Society 44.4(2004):925-929.

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