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

Yushuang Qi; Lei Zhao; Wenjuan Bian; Xue Yu; Xuhui Xu; Jianbei Qiu

doi:10.3788/COL201715.081601

Journals >Chinese Optics Letters >Volume 15 >Issue 8 >Page 081601 > Article

Chinese Optics Letters
Vol. 15, Issue 8, 081601 (2017)

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

Yushuang Qi¹, Lei Zhao², Wenjuan Bian¹, Xue Yu^1、3、*, Xuhui Xu^1、3, and Jianbei Qiu^1、3

Author Affiliations

¹College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China

²Department of Physics and Information Technology, Baoji University of Arts and Sciences, Baoji 721016, China

³Key Laboratory of Advanced Materials of Yunnan Province, Kunming 650093, China

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DOI: 10.3788/COL201715.081601 Cite this Article Set citation alerts

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 Copy Citation Text

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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