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Proceedings Paper

Vibronic coupling parameters and luminescent properties of Eu2+ doped complex alkaline earth thioaluminates
Author(s): Dong-pu Zhang; Wei Xue; Zhi-nong Yu; Ting Zhang; Jian Leng; Xiang-jun Kong
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Paper Abstract

The luminescent properties of different MII xMII 1-xAl2S4:Eu and MIIAl2S4:Eu are researched in this paper. A novel assessment method is used to evaluate these materials base on the configuration coordinates model. Vibronic coupling parameters of these phosphor materials can be calculated by the formula. With the calculation of characteristic energy and unitless factors, performances of MII xMII 1-xAl2S4:Eu and MIIAl2S4:Eu are evaluated. We then concluded that BaAl2S4:Eu shows highest Φ value comparing with other single or complex thioaluminates. With increasing amounts of Ba and Ca ions in the BaxMg1-xAl2S4:Eu and Ca1-ySryAl2S4:Eu respectively, the complex thioaluminates gives better luminescent performance and a broad tunable emission color can be achieved.

Paper Details

Date Published: 15 November 2010
PDF: 8 pages
Proc. SPIE 7852, LED and Display Technologies, 785210 (15 November 2010); doi: 10.1117/12.869876
Show Author Affiliations
Dong-pu Zhang, Beijing Institute of Technology (China)
Wei Xue, Beijing Institute of Technology (China)
Zhi-nong Yu, Beijing Institute of Technology (China)
Ting Zhang, Beijing Institute of Technology (China)
Jian Leng, Beijing Institute of Technology (China)
Xiang-jun Kong, Beijing Institute of Technology (China)

Published in SPIE Proceedings Vol. 7852:
LED and Display Technologies
Gang Yu; Yanbing Hou, Editor(s)

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