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Journal of Materials Science: Materials in Electronics
Published in:

01-08-2016

Luminescent properties of the white long afterglow phosphors: Sr3Al2O5Cl2: Eu2+, Dy3+

Authors: Qiuhan Zhang, Meizhu Rong, Huiying Tan, Zhengliang Wang, Qin Wang, Qiang Zhou, Guo Chen

Published in: Journal of Materials Science: Materials in Electronics | Issue 12/2016

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Abstract

A series of white long afterglow phosphors, Sr3Al2O5Cl2: Eu2+, Dy3+, have been successfully synthesized by the solid state reaction. Their structure, morphology, luminescent properties and long afterglow properties were investigated by X-ray diffraction, scanning electron microscopy, luminescence spectra, the luminescence decay curve and thermoluminescence spectrum. The phosphor Sr2.82Al2O5: 0.04Eu2+, 0.14Dy3+ under 340 nm light excitation exhibits two wide emission bands, which are located at ~445 and ~590 nm, respectively. Bright white light can be observed from this phosphor with appropriate CIE values (x = 0.313, y = 0.263). The white afterglow duration of Sr2.82Al2O5Cl2: 0.04Eu2+, 0.14Dy3 + is about 1.5 h (>0.35 mcd/m2). The possible generation of the afterglow has been discussed.
previous article Systematic optimization of phosphorous diffusion for solar cell application
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Metadata
Title
Luminescent properties of the white long afterglow phosphors: Sr3Al2O5Cl2: Eu2+, Dy3+
Authors
Qiuhan Zhang
Meizhu Rong
Huiying Tan
Zhengliang Wang
Qin Wang
Qiang Zhou
Guo Chen
Publication date
01-08-2016
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 12/2016
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-016-5453-x

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