Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10653717 | Solid State Communications | 2005 | 5 Pages |
Abstract
Structural and infrared-to-visible upconversion fluorescence properties of Er3+/Yb3+-codoped oxychloride lead-germanium-bismuth glass have been studied. The Raman spectrum investigation indicates that PbCl2 plays an important role in the formation of glass network, and has an important influence on the upconversion luminescence owing to lower phonon energy. Intense green and red emissions centered at 525, 546, and 657Â nm, corresponding to the transitions 2H11/2â4I15/2, 4S3/2â4I15/2, and 4F9/2â4I15/2, respectively, were observed at room temperature. The quadratic dependence of the 525, 546, and 657Â nm emissions on excitation power indicates that a two-photon absorption process occurs under 975Â nm excitation.
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Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Hongtao Sun, Liyan Zhang, Shilong Zhao, Junjie Zhang, Chunlei Yu, Dongbing He, Zhongchao Duan, Lili Hu, Zhonghong Jiang,