Photoluminescence in MgxSr1−xAl2O4:Eu, Ndand electron-vibrational interaction in the Eu 5d states期刊界 All Journals 搜尽天下杂志传播学术成果专业期刊搜索期刊信息化学术搜索

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Photoluminescence in Mg_xSr₁₋_xAl₂O₄:Eu, Ndand electron-vibrational interaction in the Eu 5d states

Authors:	KS Bartwal H Ryu I Sildos

Institution:	^a Laser Materials Development & Devices Division, Raja Ramanna Centre for Advanced Technology, Indore 452 013, India ^b Korea Research Institute of Chemical Technology, Daejeon 305-600, South Korea ^c Institute of Physics, University of Tartu, Riia 142, Tartu 51014, Estonia

Abstract:	Green phosphor compositions Mg_xSr₁₋_xAl₂O₄:Eu, Nd (with x=0.05-0.25) were prepared by solid state reaction method. The effect of Mg substitution on photoluminescence characteristics was investigated. The photoluminescence show intense green emission for MgSrAl₂O₄:Eu²⁺, Nd³⁺ with long persistence. This green emission corresponds to transitions from 4f⁶5d¹ to 4f⁷ of Eu²⁺ ion. Comparative analysis of the excitation and emission spectra were used to evaluate the crystal field splitting of the 5d states of Eu²⁺ and the parameters of electron-vibrational interaction, such as Huang-Rhys factor, effective phonon energy, and zero-phonon line position.

Keywords:	78 55 m 78 60 Hk 71 20 Be
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