| Luminescent characteristics of LiCaBO3：Eu^3＋ phosphor for white light emitting diode |
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| 引用本文： | 李盼来,杨志平,王志军,郭庆林.Luminescent characteristics of LiCaBO3：Eu^3＋ phosphor for white light emitting diode[J].中国稀土学报(英文版),2009,27(3):391-394. |
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| 作者姓名： | 李盼来 杨志平 王志军 郭庆林 |
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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： | Hebei Provincial Technology Development Foundation，Science Foundation of Hebei University，Natural Science Foundation of Hebei Province |
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| 摘 要： |
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| 关 键 词： | 发光特性 荧光粉 发光二极管灯 铕 浓度猝灭 排放强度 固相反应法 发射光谱 |
| 收稿时间： | 27 September 2008 |
Luminescent characteristics of LiCaBO3:Eu3+ phosphor for white light emitting diode |
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| LI Panlai,YANG Zhiping,WANG Zhijun,GUO Qinglin.Luminescent characteristics of LiCaBO3:Eu3+ phosphor for white light emitting diode[J].Journal of Rare Earths,2009,27(3):391-394. |
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| Authors: | LI Panlai YANG Zhiping WANG Zhijun GUO Qinglin |
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| Affiliation: | College of Physics Science and Technology, Hebei University, Baoding 071002, China |
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| Abstract: | LiCaBO3:Eu3+ phosphor was synthesized by high solid-state reaction method, and its luminescent characteristics were investigated. The emission and excitation spectra of LiCaBO3:Eu3+ phosphors exhibited that the phosphors could be effectively excited by near ultraviolet (400 nm) and blue (470 nm) light, and emitted red light. The effect of Eu3+ concentration on the emission spectrum of LiCaBO3:Eu3+ phos-phor was studied. The results showed that the emission intensity increased with increasing Eu3～ concentration, and then decreased because of concentration quenching. It reached the maximum at 3mol.% Eu3+, and the concentration self-quenching mechanism was the d-d interaction according to the Dexter theory. Under the conditions of charge compensator Li+, Na+ or K+ incorporated in LiCaBO3, the emission intensities of LiCaBO3:Eu3+ phosphor were enhanced. |
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| Keywords: | luminescence white LED LiCaBO3:Eu3 rare earths |
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