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Title: Luminescent properties and energy transfer studies of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors

Abstract

Highlights: • A series of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors were synthesized. • Phosphors exhibit strong blue/green/red emission under UV excitation. • The reason of high Tb{sup 3+} content required for Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer is unveiled. • Green and red LED prototypes were fabricated and characterized. - Abstract: A series of LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors were synthesized via solid state reaction. The Ce{sup 3+}/Tb{sup 3+} co-doped and Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} tri-doped phosphors absorb near UV light through 4f-5d transitions of Ce{sup 3+}, followed by sensitized Tb{sup 3+} green and Eu{sup 3+} red emission. Decay curves investigations for samples with various Tb{sup 3+} and Eu{sup 3+} contents reveal the occurrence of Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer. It is found that due to relative low Tb{sup 3+} → Eu{sup 3+} energy transfer rate, a high Tb{sup 3+} content (>40%) is required for efficient Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer. Emission color of LuBO{sub 3}: Ce{sup 3+}, Tb{sup 3+}, Eu{sup 3+} varies from blue through green to red with Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} ratio. The quantum efficiency of LuBO{sub 3}:more » Ce{sup 3+}, Tb{sup 3+} green phosphor and LuBO{sub 3}: Ce{sup 3+}, Tb{sup 3+}, Eu{sup 3+} red phosphor is 50% and 30%, respectively. Green and red LED prototypes were fabricated. The results show that the obtained phosphors are potential candidates as down-converted phosphors for NUV LEDs.« less

Authors:
 [1];  [2];  [3];  [4];  [5]
  1. School of Pharmaceutical Sciences, Southern Medical University, Guangzhou 510515 (China)
  2. (China)
  3. Department of Chemistry, Jinan University, Guangzhou 510632 (China)
  4. Shenzhou High School, Hengshui 053800 (China)
  5. School of Chemistry and Chemical Engineering, Sun Yat-Sen University, Guangzhou 510275 (China)
Publication Date:
OSTI Identifier:
22581596
Resource Type:
Journal Article
Journal Name:
Materials Research Bulletin
Additional Journal Information:
Journal Volume: 80; Other Information: Copyright (c) 2016 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; BORATES; CERIUM IONS; COLOR; DOPED MATERIALS; ENERGY TRANSFER; EUROPIUM IONS; EXCITATION; LUMINESCENCE; LUTETIUM COMPOUNDS; PHOSPHORS; QUANTUM EFFICIENCY; TERBIUM IONS; ULTRAVIOLET RADIATION; X-RAY DIFFRACTION

Citation Formats

Zhang, Xinguo, E-mail: sysuzxg@gmail.com, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Fu, Xionghui, Song, Jiahui, and Gong, Menglian. Luminescent properties and energy transfer studies of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors. United States: N. p., 2016. Web. doi:10.1016/J.MATERRESBULL.2016.03.023.
Zhang, Xinguo, E-mail: sysuzxg@gmail.com, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Fu, Xionghui, Song, Jiahui, & Gong, Menglian. Luminescent properties and energy transfer studies of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors. United States. doi:10.1016/J.MATERRESBULL.2016.03.023.
Zhang, Xinguo, E-mail: sysuzxg@gmail.com, School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, Fu, Xionghui, Song, Jiahui, and Gong, Menglian. Mon . "Luminescent properties and energy transfer studies of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors". United States. doi:10.1016/J.MATERRESBULL.2016.03.023.
@article{osti_22581596,
title = {Luminescent properties and energy transfer studies of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors},
author = {Zhang, Xinguo, E-mail: sysuzxg@gmail.com and School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004 and Fu, Xionghui and Song, Jiahui and Gong, Menglian},
abstractNote = {Highlights: • A series of color-tunable LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors were synthesized. • Phosphors exhibit strong blue/green/red emission under UV excitation. • The reason of high Tb{sup 3+} content required for Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer is unveiled. • Green and red LED prototypes were fabricated and characterized. - Abstract: A series of LuBO{sub 3}: Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} phosphors were synthesized via solid state reaction. The Ce{sup 3+}/Tb{sup 3+} co-doped and Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} tri-doped phosphors absorb near UV light through 4f-5d transitions of Ce{sup 3+}, followed by sensitized Tb{sup 3+} green and Eu{sup 3+} red emission. Decay curves investigations for samples with various Tb{sup 3+} and Eu{sup 3+} contents reveal the occurrence of Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer. It is found that due to relative low Tb{sup 3+} → Eu{sup 3+} energy transfer rate, a high Tb{sup 3+} content (>40%) is required for efficient Ce{sup 3+} → Tb{sup 3+} → Eu{sup 3+} energy transfer. Emission color of LuBO{sub 3}: Ce{sup 3+}, Tb{sup 3+}, Eu{sup 3+} varies from blue through green to red with Ce{sup 3+}/Tb{sup 3+}/Eu{sup 3+} ratio. The quantum efficiency of LuBO{sub 3}: Ce{sup 3+}, Tb{sup 3+} green phosphor and LuBO{sub 3}: Ce{sup 3+}, Tb{sup 3+}, Eu{sup 3+} red phosphor is 50% and 30%, respectively. Green and red LED prototypes were fabricated. The results show that the obtained phosphors are potential candidates as down-converted phosphors for NUV LEDs.},
doi = {10.1016/J.MATERRESBULL.2016.03.023},
journal = {Materials Research Bulletin},
issn = {0025-5408},
number = ,
volume = 80,
place = {United States},
year = {2016},
month = {8}
}