| 助熔剂H3BO3对白光发光二极管用Li2BaSiO4：Eu^2＋蓝绿色荧光粉材料性能的影响 |
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| 引用本文： | 陈栋华,;韦秀华,;姚山山.助熔剂H3BO3对白光发光二极管用Li2BaSiO4：Eu^2＋蓝绿色荧光粉材料性能的影响[J].中南民族学院学报(自然科学版),2009(3):14-18. |
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| 作者姓名： | 陈栋华 ;韦秀华 ;姚山山 |
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| 作者单位： | [1]中南民族大学化学与材料科学学院催化材料科学湖北省暨国家民委-教育部共建重点实验室,武汉430074; [2]商丘师范学院化学系,476000; [3]华中科技大学材料科学与工程学院材料形成与小模具技术国家重点实验室,武汉430074 |
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| 基金项目： | 湖北省自然科学基金重点资助项目（2001ABA009） |
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| 摘 要： | 采用燃烧法在700℃下成功合成了用做白光发光二极管（WLED）的Li2BaSiO4∶Eu^2＋蓝绿色荧光粉,研究了不同摩尔分数的H3BO3对Li2BaSiO4∶Eu^2＋荧光粉材料晶体结构、颗粒粒径大小、激发光谱和发射光谱性能的影响.结果表明：随着硼酸量的增加,激发和发射光谱有着显著的提高,H3BO3的最佳摩尔分数为0.06.过量硼酸的加入,基质会有新的物相产生.可见适量的H3BO3对白光发光二极管用Li2BaSiO4∶Eu^2＋蓝绿色荧光粉材料的光学性质有很重要的影响.
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| 关 键 词： | 燃烧法 硼酸 发光二极管 蓝绿色荧光粉 |
Effect of H3BO3 on Blue-Green Emitting Phosphors Li2BaSiO4：Eu^2＋ in White Light Emitting Diodes |
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| Institution: | Chen Donghua, Wei Xiuhua, Yao Shanshan (1 Key Laboratory of Catalysis and Material Science of the State Ethnic Affairs Commission N-Ministry of Education, Huhei Province, College of Chemistry and Materials Science,South-Central University for Nationalities, Whuan 430074 ,China ; 2 Department of Chemistry ,Shangqiu Normal University ,Shangqiu 476000 ,China ; 3 State key laboratory of Matrials Processing and Die ＆ Mould Technology, College of Materials Science and Engineering,Huazhong University of Science ＆ Technology,Wuhan 430074,China) |
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| Abstract: | The blue-green emitting phosphors of Li2BaSiO4：Eu^2＋ were synthesized successfully by combustion with ignition temperature of 700 ℃ as a fluorescent material for white light emitting diodes.The influence on the crystal structure,particle sizes,excitation and emission spectra were studied with different molar ratios of H3BO3.It was found that H3BO3 increases the intensity of the luminescence.The optimum molar ratio of H3BO3 was 0.06.When the molar ratio of boric acid was 0.08,a new phase of Ba（BO2）2 was obtained. Obviously, the amount of H3BO3 affects the luminescence properties of Li2 （Ba0.99 ,Eu0.01）Si04 in white light emitting diodes. |
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| Keywords: | combustion synthesis boric acid LED blue-green emitting phosphors |
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