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
Abstract
A series of Ce 3 + , Sm 3 + -doped Zn 2 GeO 4 phosphors are prepared by the solid-state reaction. A blue photoluminescence (PL) of Zn 2 GeO 4 is observed as the recombination of the electrons trapped on V O and Z n i with holes trapped on V Ge and V Zn ′ . The energy transfer process between Ce 3 + and Sm 3 + 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 Ce 3 + to Sm 3 + occurs. Besides, Ce 3 +
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.