Structure and Upconversion Luminescence of Hydrothermal PbWO(4):Er(3+), Yb(3+) Powders

	Structure and Upconversion Luminescence of Hydrothermal PbWO(4):Er(3+), Yb(3+) Powders
其他题名	论文其他题名
	Dai Q. L.; Song H. W.; Ren X. G.; Lu S. Z.; Pan G. H.; Bai X.; Dong B.; Qin R. F.; Qu X. S.; Zhang H.
	2008
发表期刊	Journal of Physical Chemistry C
ISSN	1932-7447
卷号	112 期号:49 页码:19694-19698
摘要	PbWO(4): Er(3+),Yb(3+) nanocrystals (similar to 100 nm) were prepared by the hydrothermal method at different pH values (pH = 4, 7, and 9). Their structure and luminescence properties under 978-nm laser-diode excitation were studied. The results indicate that the practical ratio of W to Pb in the nanocrystals and the doping concentration of Yb(3+) depended strongly on the pH value due to structure chancre. In upconversion, red ((4)F(9/2)->(4)I(15/2)) and green ((2)H(11/2),(4)S(3/2)->(4)I(15/2)) emissions were observed, both of which occurred via a two-photon populating process. Biexponential upconversion dynamics were observed, which was attributed to luminescence centers surrounded by different local environments. The intensity ratio of (2)H(11/2 ->)(4)I(15/2) to (4)S(3/2 ->)(4)I(15/2) (RHS) was explored to reveal the local thermal effect under the exposure of the laser diode, showing that the temperature at the exposed spot increased linearly with respect to excitation power density and Yb(3+) concentration.
收录类别	SCI ; EI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/26428
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Dai Q. L.,Song H. W.,Ren X. G.,et al. Structure and Upconversion Luminescence of Hydrothermal PbWO(4):Er(3+), Yb(3+) Powders[J]. Journal of Physical Chemistry C,2008,112(49):19694-19698.
APA	Dai Q. L..,Song H. W..,Ren X. G..,Lu S. Z..,Pan G. H..,...&Zhang H..(2008).Structure and Upconversion Luminescence of Hydrothermal PbWO(4):Er(3+), Yb(3+) Powders.Journal of Physical Chemistry C,112(49),19694-19698.
MLA	Dai Q. L.,et al."Structure and Upconversion Luminescence of Hydrothermal PbWO(4):Er(3+), Yb(3+) Powders".Journal of Physical Chemistry C 112.49(2008):19694-19698.

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