Radiative properties of Eu2+ in BaGa2S4
Radiative properties of Eu2+ in BaGa2S4
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DOI：
10.1016/j.jpcs.2005.02.003
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发表时间：
2005-06-01
影响因子：
4
通讯作者：
Benalloul, P
中科院分区：
文献类型：
--
作者：
Jabbarov, RB;Chartier, C;Benalloul, P
报道了BaGa_2S_4：Eu ~（2+）蓝绿色荧光粉的光致发光研究。漫反射，激发和发射光谱进行了检查，目的是扩大的基础知识的Eu 2+稀土离子在这种晶格中的发射。的辐射特性的热依赖性和Eu 2+浓度的影响进行了研究。测定了热猝灭的斯托克斯位移、晶场分裂和激活能。通过结合这些结果与文献中的数据，我们讨论了BaAl 2S 4：Eu 2+蓝色荧光体的辐射特性与本研究中确定的同构BaGa 2S 4：Eu 2+荧光体的辐射特性的关系。(c)2005爱思唯尔有限公司保留所有权利。
A photoluminescence study of the blue-green emitting BaGa2S4:Eu2+ phosphor is reported. Diffuse reflectance, excitation and emission spectra were examined with the aim to enlarge the fundamental knowledge about the emission of the Eu2+ rare earth ion in this lattice. The thermal dependence of the radiative properties and the influence of the Eu2+ concentration were investigated. The Stokes shift, the crystal field splitting and the activation energy of the thermal quenching were determined. By combining these results with data available in literature, we discussed the radiative properties of the BaAl2S4:Eu2+ blue phosphor in relation with those determined in this study for the isostructural BaGa2S4:Eu2+ phosphor. (c) 2005 Elsevier Ltd. All rights reserved.