Temperature dependence of emission and lifetime in Eu3+- and Dy3+-doped GdVO4

Marko G. Nikolić; Dragana J. Jovanović; Miroslav D. Dramićanin

doi:10.1364/AO.52.001716

Applied Optics
Vol. 52,
Issue 8,
pp. 1716-1724
(2013)
•https://doi.org/10.1364/AO.52.001716

Temperature dependence of emission and lifetime in Eu³⁺- and Dy³⁺-doped GdVO₄

Marko G. Nikolić, Dragana J. Jovanović, and Miroslav D. Dramićanin

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Marko G. Nikolić, Dragana J. Jovanović, and Miroslav D. Dramićanin, "Temperature dependence of emission and lifetime in Eu³⁺- and Dy³⁺-doped GdVO₄," Appl. Opt. 52, 1716-1724 (2013)

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Table of Contents Category
- Spectroscopy
Optics & Photonics Topics
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The topics in this list come from the Optics and Photonics Topics applied to this article.
Previously assigned OCIS codes
- Temperature (120.6780)
- Spectroscopy, fluorescence and luminescence (300.6280)

About this Article
History
- Original Manuscript: September 27, 2012
- Revised Manuscript: November 25, 2012
- Manuscript Accepted: December 21, 2012
- Published: March 8, 2013

Abstract

${Eu}^{3 +}$ - and ${Dy}^{3 +}$ -doped ${GdVO}_{4}$ samples synthesized by a high-temperature solid-state method are investigated by fluorescence spectroscopy at 298–750 K. They demonstrate potential for development as thermographic phosphors because the experimental and theoretical temperature dependence of the intensity ratio of the two lines agrees well. Experimental lifetime measurements recorded at 10–750 K were fitted using three theoretical models: multiphonon relaxation, temperature quenching through the charge transfer (CT) region, and our modified CT model (TDCT), which considers the temperature dependence of CT energy. The TDCT model yields the best results with good agreement between experimental and fitted lifetime data.

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	${GdVO}_{4} : {Eu}^{3 +}$	${GdVO}_{4} : {Dy}^{3 +}$
$W_{r}$ [ ${ms}^{- 1}$ ]	1.81	5.84
$W_{n r} (0)$ [ ${ms}^{- 1}$ ]	$8.49 \cdot 10^{- 4}$	$4.58 \cdot 10^{- 6}$
$Δ E$ [ ${cm}^{- 1}$ ]	11585	7821
$ħ ω$ [ ${cm}^{- 1}$ ]	563	315
$p$	21	25

	${GdVO}_{4} : {Eu}^{3 +}$	${GdVO}_{4} : {Dy}^{3 +}$
$W_{r}$ [ ${ms}^{- 1}$ ]	1.85	5.74
$W_{n r} (0)$ [ ${ms}^{- 1}$ ]	$1.73 \cdot 10^{8}$	$4.91 \cdot 10^{11}$
$E_{a}$ [ ${cm}^{- 1}$ ]	8044	9356
$ℏ ω$ [ ${cm}^{- 1}$ ]	557	503

	${GdVO}_{4} : {Eu}^{3 +}$	${GdVO}_{4} : {Dy}^{3 +}$
$W_{r}$ [ ${ms}^{- 1}$ ]	1.83	5.72
$W_{n r} (0)$ [ ${ms}^{- 1}$ ]	0.301	0.381
$E_{a}$ [ ${cm}^{- 1}$ ]	8057	9384
$ℏ ω$ [ ${cm}^{- 1}$ ]	551	510
$α$ [ ${cm}^{- 1} / K$ ]	15.69	22.37

	${GdVO}_{4} : {Eu}^{3 +}$	${GdVO}_{4} : {Dy}^{3 +}$
$W_{r}$ [ ${ms}^{- 1}$ ]	1.81	5.84
$W_{n r} (0)$ [ ${ms}^{- 1}$ ]	$8.49 \cdot 10^{- 4}$	$4.58 \cdot 10^{- 6}$
$Δ E$ [ ${cm}^{- 1}$ ]	11585	7821
$ħ ω$ [ ${cm}^{- 1}$ ]	563	315
$p$	21	25

	${GdVO}_{4} : {Eu}^{3 +}$	${GdVO}_{4} : {Dy}^{3 +}$
$W_{r}$ [ ${ms}^{- 1}$ ]	1.85	5.74
$W_{n r} (0)$ [ ${ms}^{- 1}$ ]	$1.73 \cdot 10^{8}$	$4.91 \cdot 10^{11}$
$E_{a}$ [ ${cm}^{- 1}$ ]	8044	9356
$ℏ ω$ [ ${cm}^{- 1}$ ]	557	503

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