Search

Your search keyword '"Xu, Xiaodong"' showing total 2 results
2 results on '"Xu, Xiaodong"'

1. Growth, luminescence and energy transfer studies of Pr3+, Yb3+ co-doped CaYAlO4 single crystal

Author

Di, Juqing, Xu, Xiaodong, Xia, Changtai, Li, Dongzhen, Zhou, Dahua, Sai, Qinglin, Wang, Lulu, and Xu, Jun

Subjects
*SINGLE crystals, *PRASEODYMIUM, *LUMINESCENCE, *ENERGY transfer, *CRYSTAL growth, *QUANTUM theory
Abstract

Abstract: Pr3+, Yb3+ co-doped CaYAlO4 (Pr, Yb: CYA) single crystal was grown using the Czochralski (CZ) method. For near-infrared quantum-cutting system, a quantum efficiency of 145% for Pr3+, Yb3+-codoped CYA crystal has been obtained by ignoring the nonradiative losses. Under excitation at 940nm, high intensities of 502nm, 555nm, 628nm, 661nm and 729nm emissions turn up. Fluorescence decay time of 3P0→3F2 emission of Pr3+ ions and 2F5/2→2F7/2 transition of Yb3+ ions were also studied as evidences for energy transfer. [Copyright &y& Elsevier]

Published
2013
Full Text
View/download PDF

2. Upconversion luminescence in Yb3+-doped yttrium aluminum garnets

Author

Xu, Xiaodong, Zhao, Zhiwei, Song, Pingxin, Jiang, Benxue, Zhou, Guoqing, Xu, Jun, Deng, Peizhen, Bourdet, Gilbert, Christophe Chanteloup, Jean, Zou, Ji-Ping, and Fulop, Annabelle

Subjects
*YTTRIUM, *LUMINESCENCE, *RARE earth metals, *SPECTRUM analysis
Abstract

Abstract: In this paper, we present results on upconversion luminescence performed on Yb3+-doped yttrium aluminum garnets under 940nm excitation. The upconversion luminescence was ascribed to Yb3+ cooperative luminescence and the presence of rare earth impurity ions. The cooperative luminescence spectra as a function of Yb concentration were measured and the emission intensity variation with Yb concentration was discussed. Yb3+ energy migration quenched the cooperative luminescence of Yb:YAG crystals with doping level over 15at%. [Copyright &y& Elsevier]

Published
2005
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results