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Title: Blue–green afterglow of BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors

Abstract

Highlights: • Afterglow can be achieved when Eu{sup 2+} is absent in the DyAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. • The afterglow of DyAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors is discernible to naked eyes for minutes. • Dy{sup 3+} introduced trap centers are believed to be responsible for the afterglow. - Abstract: Dy{sup 3+} doped barium aluminate (BaAl{sub 2}O{sub 4}:Dy{sup 3+}) phosphors were prepared via the sol–gel combustion route at the ignition temperature of 600 °C. The phosphors were characterized with X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Regardless of the absence of Eu{sup 2+} luminescent centers, broadband blue–green afterglow with its peak at about 490 nm was recorded in the BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. The decay profile of the blue–green afterglow can be best fitted into a two-component exponential function with the two lifetime decay constants to be 8.81 and 45.25 s, respectively. The observation of blue–green afterglow from BaAl{sub 2}O{sub 4}:Dy{sup 3+} in the absence of Eu{sup 2+} provides unique opportunity in unveiling the afterglow mechanisms of rare-earth doped alkaline-metal aluminates. Possible mechanisms on the blue–green afterglow in BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors are discussed in terms ofmore » the Dy{sup 3+} ions introduced trap centers as well as luminescent centers in the crystal lattice.« less

Authors:
 [1];  [1];  [2];  [3]
  1. School of Mathematics and Physics, Changzhou University, Jiangsu 213164 (China)
  2. School of Physics and Technology, Wuhan University, Hubei 430072 (China)
  3. Analysis and Testing Center, Changzhou University, Jiangsu 213164 (China)
Publication Date:
OSTI Identifier:
22581455
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 75; Other Information: Copyright (c) 2015 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0025-5408
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; AFTERGLOW; ALUMINATES; BARIUM COMPOUNDS; CRYSTAL LATTICES; CRYSTALS; DOPED MATERIALS; DYSPROSIUM IONS; EMISSION SPECTROSCOPY; EUROPIUM IONS; FOURIER TRANSFORMATION; NANOSTRUCTURES; PHOSPHORS; PHOTOLUMINESCENCE; SCANNING ELECTRON MICROSCOPY; SOL-GEL PROCESS; X-RAY DIFFRACTION; X-RAY PHOTOELECTRON SPECTROSCOPY

Citation Formats

Zhai, Bao-gai, Ma, Qing-lan, School of Electronics and Information, Nantong University, Jiangsu 226019, Xiong, Rui, Li, Xiazhang, and Huang, Yuan Ming, E-mail: dongshanisland@126.com. Blue–green afterglow of BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2015.11.021.
Zhai, Bao-gai, Ma, Qing-lan, School of Electronics and Information, Nantong University, Jiangsu 226019, Xiong, Rui, Li, Xiazhang, & Huang, Yuan Ming, E-mail: dongshanisland@126.com. Blue–green afterglow of BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. United States. https://doi.org/10.1016/J.MATERRESBULL.2015.11.021
Zhai, Bao-gai, Ma, Qing-lan, School of Electronics and Information, Nantong University, Jiangsu 226019, Xiong, Rui, Li, Xiazhang, and Huang, Yuan Ming, E-mail: dongshanisland@126.com. 2016. "Blue–green afterglow of BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors". United States. https://doi.org/10.1016/J.MATERRESBULL.2015.11.021.
@article{osti_22581455,
title = {Blue–green afterglow of BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors},
author = {Zhai, Bao-gai and Ma, Qing-lan and School of Electronics and Information, Nantong University, Jiangsu 226019 and Xiong, Rui and Li, Xiazhang and Huang, Yuan Ming, E-mail: dongshanisland@126.com},
abstractNote = {Highlights: • Afterglow can be achieved when Eu{sup 2+} is absent in the DyAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. • The afterglow of DyAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors is discernible to naked eyes for minutes. • Dy{sup 3+} introduced trap centers are believed to be responsible for the afterglow. - Abstract: Dy{sup 3+} doped barium aluminate (BaAl{sub 2}O{sub 4}:Dy{sup 3+}) phosphors were prepared via the sol–gel combustion route at the ignition temperature of 600 °C. The phosphors were characterized with X-ray diffractometry, scanning electron microscopy, transmission electron microscopy, photoluminescence spectroscopy, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. Regardless of the absence of Eu{sup 2+} luminescent centers, broadband blue–green afterglow with its peak at about 490 nm was recorded in the BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors. The decay profile of the blue–green afterglow can be best fitted into a two-component exponential function with the two lifetime decay constants to be 8.81 and 45.25 s, respectively. The observation of blue–green afterglow from BaAl{sub 2}O{sub 4}:Dy{sup 3+} in the absence of Eu{sup 2+} provides unique opportunity in unveiling the afterglow mechanisms of rare-earth doped alkaline-metal aluminates. Possible mechanisms on the blue–green afterglow in BaAl{sub 2}O{sub 4}:Dy{sup 3+} phosphors are discussed in terms of the Dy{sup 3+} ions introduced trap centers as well as luminescent centers in the crystal lattice.},
doi = {10.1016/J.MATERRESBULL.2015.11.021},
url = {https://www.osti.gov/biblio/22581455}, journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 75,
place = {United States},
year = {Tue Mar 15 00:00:00 EDT 2016},
month = {Tue Mar 15 00:00:00 EDT 2016}
}