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 »
- Authors:
-
- School of Mathematics and Physics, Changzhou University, Jiangsu 213164 (China)
- School of Physics and Technology, Wuhan University, Hubei 430072 (China)
- 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}
}