Preparation and luminescence characteristics of Sr3SiO5:Eu^2+ phosphor for white LED |
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作者姓名: | LI PanLai YANG ZhiPing WANG ZhiJun GUO QingLin LI Xu |
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作者单位: | College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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基金项目: | Supported by Hebei Provincial Technology Development Foundation (Grant No. 51215103b) |
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摘 要: | The Sr3SiO5:Eu^2+ phosphor was synthesized by high temperature solid-state reaction. The emission spectrum of Sr3SiO5:Eu^2+ 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:Eu^2+ is influenced by the Eu^2+ concentration. The relative emission spectra of the white-emitting InGaN-based YAG:Ce^3+ LED and Sr3SiO5:Eu^2+ LED were investigated. The results show that the color development of InGaN-based Sr3SiO5:Eu^2+ is better than that of InGaN-based YAG:Ce^3+, and the CIE chromaticity of InGaN-based Sr3SiO5:Eu^2+ is (x=0.348, y=0.326).
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关 键 词: | 发光性 无机发光材料 白光二极管 性状 |
收稿时间: | 2007-03-05 |
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