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The luminescent properties of different MIIxMII1-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 MIIxMII1-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.
Dong-pu Zhang,Wei Xue,Zhi-nong Yu,Ting Zhang,Jian Leng, andXiang-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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