Chinese Optics Letters, 2017, 15 (8): 081601, Published Online: Jul. 20, 2018  

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

Author Affiliations
1 College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
2 Department of Physics and Information Technology, Baoji University of Arts and Sciences, Baoji 721016, China
3 Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China
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+

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[J]. Chinese Optics Letters, 2017, 15(8): 081601.

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