Luminescence enhancement of CaZnGe2O6:Tb3+ afterglow phosphors synthesized using ZnO nanopowders

Boon Kuan Woo; Zhiping Luo; Yang Li; Surinder P. Singh; Alan G. Joly; Marius Hossu; Zhongxin Liu; Wei Chen

doi:10.1016/j.optmat.2011.03.001

Luminescence enhancement of CaZnGe₂O₆:Tb³⁺ afterglow phosphors synthesized using ZnO nanopowders

Boon Kuan Woo, Zhiping Luo, Yang Li, Surinder P. Singh, Alan G. Joly, Marius Hossu, Zhongxin Liu, Wei Chen^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

14 Citations (Scopus)

Abstract

CaZnGe₂O₆:Tb³⁺ afterglow phosphors were prepared by solid state reaction using organic coated ZnO nanopowders and their photoluminescence, X-ray luminescence and afterglow properties were investigated. The CaZnGe₂O₆:Tb³⁺ samples emit a green luminescence at 548 nm attributed to the ⁵D₄- ⁷F₅ transition of Tb³⁺. It was observed that the replacement of bulk ZnO by ZnO nanopowder in the sample synthesis increases the luminescence intensity. By adjusting the mass ratio of bulk ZnO to nanopowder ZnO, the photoluminescence intensity, X-ray luminescence intensity, and afterglow efficiency are improved. The optimized sample made with a 0.71 ratio of nano ZnO to bulk ZnO has a factor of four enhancement in X-ray luminescence, photoluminescence and afterglow intensities in comparison with the sample made with 100% bulk ZnO.

Original language	English
Pages (from-to)	1283-1290
Number of pages	8
Journal	Optical Materials
Volume	33
Issue number	8
DOIs	https://doi.org/10.1016/j.optmat.2011.03.001
Publication status	Published - Jun 2011
Externally published	Yes

Keywords

Afterglow
Enhancement
Photoluminescence
X-ray luminescence
Zno nanoparticles

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10.1016/j.optmat.2011.03.001

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title = "Luminescence enhancement of CaZnGe2O6:Tb3+ afterglow phosphors synthesized using ZnO nanopowders",

abstract = "CaZnGe2O6:Tb3+ afterglow phosphors were prepared by solid state reaction using organic coated ZnO nanopowders and their photoluminescence, X-ray luminescence and afterglow properties were investigated. The CaZnGe2O6:Tb3+ samples emit a green luminescence at 548 nm attributed to the 5D4- 7F5 transition of Tb3+. It was observed that the replacement of bulk ZnO by ZnO nanopowder in the sample synthesis increases the luminescence intensity. By adjusting the mass ratio of bulk ZnO to nanopowder ZnO, the photoluminescence intensity, X-ray luminescence intensity, and afterglow efficiency are improved. The optimized sample made with a 0.71 ratio of nano ZnO to bulk ZnO has a factor of four enhancement in X-ray luminescence, photoluminescence and afterglow intensities in comparison with the sample made with 100% bulk ZnO.",

keywords = "Afterglow, Enhancement, Photoluminescence, X-ray luminescence, Zno nanoparticles",

author = "Woo, {Boon Kuan} and Zhiping Luo and Yang Li and Singh, {Surinder P.} and Joly, {Alan G.} and Marius Hossu and Zhongxin Liu and Wei Chen",

year = "2011",

month = jun,

doi = "10.1016/j.optmat.2011.03.001",

language = "English",

volume = "33",

pages = "1283--1290",

journal = "Optical Materials",

issn = "0925-3467",

number = "8",

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T1 - Luminescence enhancement of CaZnGe2O6:Tb3+ afterglow phosphors synthesized using ZnO nanopowders

AU - Woo, Boon Kuan

AU - Luo, Zhiping

AU - Li, Yang

AU - Singh, Surinder P.

AU - Joly, Alan G.

AU - Hossu, Marius

AU - Liu, Zhongxin

AU - Chen, Wei

PY - 2011/6

Y1 - 2011/6

N2 - CaZnGe2O6:Tb3+ afterglow phosphors were prepared by solid state reaction using organic coated ZnO nanopowders and their photoluminescence, X-ray luminescence and afterglow properties were investigated. The CaZnGe2O6:Tb3+ samples emit a green luminescence at 548 nm attributed to the 5D4- 7F5 transition of Tb3+. It was observed that the replacement of bulk ZnO by ZnO nanopowder in the sample synthesis increases the luminescence intensity. By adjusting the mass ratio of bulk ZnO to nanopowder ZnO, the photoluminescence intensity, X-ray luminescence intensity, and afterglow efficiency are improved. The optimized sample made with a 0.71 ratio of nano ZnO to bulk ZnO has a factor of four enhancement in X-ray luminescence, photoluminescence and afterglow intensities in comparison with the sample made with 100% bulk ZnO.

AB - CaZnGe2O6:Tb3+ afterglow phosphors were prepared by solid state reaction using organic coated ZnO nanopowders and their photoluminescence, X-ray luminescence and afterglow properties were investigated. The CaZnGe2O6:Tb3+ samples emit a green luminescence at 548 nm attributed to the 5D4- 7F5 transition of Tb3+. It was observed that the replacement of bulk ZnO by ZnO nanopowder in the sample synthesis increases the luminescence intensity. By adjusting the mass ratio of bulk ZnO to nanopowder ZnO, the photoluminescence intensity, X-ray luminescence intensity, and afterglow efficiency are improved. The optimized sample made with a 0.71 ratio of nano ZnO to bulk ZnO has a factor of four enhancement in X-ray luminescence, photoluminescence and afterglow intensities in comparison with the sample made with 100% bulk ZnO.

KW - Afterglow

KW - Enhancement

KW - Photoluminescence

KW - X-ray luminescence

KW - Zno nanoparticles

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U2 - 10.1016/j.optmat.2011.03.001

DO - 10.1016/j.optmat.2011.03.001

M3 - Article

AN - SCOPUS:79956349428

SN - 0925-3467

VL - 33

SP - 1283

EP - 1290

JO - Optical Materials

JF - Optical Materials

IS - 8

ER -

Luminescence enhancement of CaZnGe₂O₆:Tb³⁺ afterglow phosphors synthesized using ZnO nanopowders

Abstract

Keywords

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