| YAG:Ce~(3+)玻璃陶瓷白光LED的发光特性 |
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| 引用本文： | 宋国华.YAG:Ce~(3+)玻璃陶瓷白光LED的发光特性[J].上海电力学院学报,2010(12). |
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| 作者姓名： | 宋国华 |
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| 作者单位： | 南通大学理学院; |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2008183); 南通市应用研究项目(K2010058); 南通市公共技术服务平台(DE2010005) |
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| 摘 要： | 用化学共沉淀法制备掺铈钇铝石榴石(YAG:Ce3+)前驱体,以B2O3-Al2O3-SiO2-Na2O为玻璃基质制作Ce3+掺杂YAG玻璃陶瓷,并封装成玻璃陶瓷白光发光二极管(LED)。改变玻璃陶瓷基片厚度和外形,测量玻璃陶瓷白光LED的光电色参数,并与常规涂敷YAG荧光粉方法制作的白光LED进行对照比较。结果表明,玻璃陶瓷白光LED发射光谱波形与普通白光LED光谱基本一致。玻璃陶瓷基片从0.50mm变化到0.90mm厚时,相关色温(CCT)从4 182 K增加到8862K。0.60mm厚平板玻璃陶瓷基片封装成的白光LED荧光能量转换效率约为20%,中心CCT为6396K,-85°和+85°视角CCT分别为5921K和5898K;而平凸玻璃陶瓷基片封装成的白光LED,-85°和+85°视角CCT变化范围可控制在150K范围内。
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| 关 键 词： | 白光发光二极管(LED) 掺铈钇铝石榴石(YAG:Ce3 )荧光粉 玻璃陶瓷 相关色温(CCT) CCT角向发布 |
Photoluminescence properties of the Ce~(3+)-doped yttrium aluminum garnet glass-ceramic white LED |
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| SONG Guo-hua.Photoluminescence properties of the Ce~(3+)-doped yttrium aluminum garnet glass-ceramic white LED[J].Journal of Shanghai University of Electric Power,2010(12). |
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| Authors: | SONG Guo-hua |
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| Affiliation: | School of Science,Nantong Univeristy,Nantong 226007,China, |
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| Abstract: | The chemical co-precipitation is used to prepare YAG:Ce3+ precursors, and B2O3-Al2O3-SiO2-Na2O is as the glass substrate,so the Ce3+-doped YAG glass-ceramic is fabricated,and then packaged into a glass-ceramic white LED.The photoelectric color parameters of the glass-ceramic white LED are measured by changing the substrate thickness and shape,and compared with those obtained by the conventional YAG phosphor coating method.The results show that the emission spectrum of the glass-ceramic white LED is essentia... |
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| Keywords: | white LED YAG: Ce3 phosphor glass-ceramics correlated color temperature(CCT) correlated color temperature(CCT) angular distribution |
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