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《科学通报(英文版)》 2008-07
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Preparation and luminescence characteristics of Sr_3SiO_5:Eu~(2+) phosphor for white LED

LI PanLai, YANG ZhiPing, WANG ZhiJun, GUO QingLin & LI XuCollege of Physics Science and Technology, Hebei University, Baoding 071002, China  
The Sr3SiO5:Eu2+ phosphor was synthesized by high temperature solid-state reaction. The emission spectrum of Sr3SiO5:Eu2+ shows two bands centered at 487 and 575 nm, which well agree with the theoretic values of emission spectrum. The excitation spectrum for 575 nm emission center has several excitation bands at 365, 418, 458 and 473 nm. And the results show that the emission spectrum of Sr3SiO5:Eu2+ is influenced by the Eu2+ concentration. The relative emission spectra of the white-emitting InGaN-based YAG:Ce3+ LED and Sr3SiO5:Eu2+ LED were investigated. The results show that the color development of InGaN-based Sr3SiO5:Eu2+ is better than that of InGaN-based YAG:Ce3+, and the CIE chromaticity of InGaN-based Sr3SiO5:Eu2+ is (x=0.348, y=0.326).
【Fund】: Hebei Provincial Technology Development Foundation (Grant No. 51215103b)
【CateGory Index】: O611.3
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