Vibronic coupling parameters and luminescent properties of Eu2+ doped complex alkaline earth thioaluminates

Dong-pu Zhang; Wei Xue; Zhi-nong Yu; Ting Zhang; Jian Leng; Xiang-jun Kong

doi:10.1117/12.869876

15 November 2010 Vibronic coupling parameters and luminescent properties of Eu2+ doped complex alkaline earth thioaluminates

Dong-pu Zhang, Wei Xue, Zhi-nong Yu, Ting Zhang, Jian Leng, Xiang-jun Kong

Author Affiliations +

Proceedings Volume 7852, LED and Display Technologies; 785210 (2010) https://doi.org/10.1117/12.869876
Event: Photonics Asia 2010, 2010, Beijing, China

Abstract

The luminescent properties of different M^II _xM^II _1-xAl₂S₄:Eu and M^IIAl₂S₄: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 M^II _xM^II _1-xAl₂S₄:Eu and M^IIAl₂S₄: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 Ba_xMg_1-xAl₂S₄:Eu and Ca_1-ySr_yAl₂S₄:Eu respectively, the complex thioaluminates gives better luminescent performance and a broad tunable emission color can be achieved.

Citation Download Citation

Dong-pu Zhang, Wei Xue, Zhi-nong Yu, Ting Zhang, Jian Leng, and Xiang-jun Kong "Vibronic coupling parameters and luminescent properties of Eu2+ doped complex alkaline earth thioaluminates", Proc. SPIE 7852, LED and Display Technologies, 785210 (15 November 2010); https://doi.org/10.1117/12.869876

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