Changchun Institute of Optics,Fine Mechanics and Physics,CAS
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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