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Energy transfer between Ce3+ and Sm3+ in Zn2GeO4 phosphor with the native defects for light-emitting diodes

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Abstract

A series of Ce3+, Sm3+-doped Zn2GeO4 phosphors are prepared by the solid-state reaction. A blue photoluminescence (PL) of Zn2GeO4 is observed as the recombination of the electrons trapped on VO? and Zni? with holes trapped on VGe and VZn′. The energy transfer process between Ce3+ and Sm3+ is confirmed by the PL spectra and decay curves, and the emission colors can be adjusted from blue to orange–red. Furthermore, we verify unambiguously that the energy transfer from Ce3+ to Sm3+ occurs. Besides, Ce3+ ions can act as a bridge, possibly promoting the energy transfer from the Zn2GeO4 host matrix to Sm3+ ions.<录用日期>2017-05-18<上网时间>2017-06-12

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DOI:10.3788/col201715.081601

所属栏目:Materials

基金项目:This work was supported by the National Nature Science Foundation of China (Nos. 61565009 and 61308091), the Young Talents Support Program of Faculty of Materials Science and Engineering, Kunming University of Science and Technology (No. 14078342), and the Postdoctoral Science Foundation of China (No. 2013M540720).

收稿日期:2017-04-06

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Yushuang Qi:College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Lei Zhao:Department of Physics and Information Technology, Baoji University of Arts and Sciences, Baoji 721016, China
Wenjuan Bian:College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Xue Yu:College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaKey Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China
Xuhui Xu:College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaKey Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China
Jianbei Qiu:College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, ChinaKey Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China

联系人作者:yuyu6593@126.com;

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引用该论文

Yushuang Qi, Lei Zhao, Wenjuan Bian, Xue Yu, Xuhui Xu, Jianbei Qiu, "Energy transfer between Ce3+ and Sm3+ in Zn2GeO4 phosphor with the native defects for light-emitting diodes," Chinese Optics Letters 15(8), 081601 (2017)

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