| 有机材料DCJTB在分层点粉中对白光LED发光特性的影响 |
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| 引用本文： | 毕长栋,张方辉,张麦丽,马颖.有机材料DCJTB在分层点粉中对白光LED发光特性的影响[J].功能材料,2011,42(10). |
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| 作者姓名： | 毕长栋 张方辉 张麦丽 马颖 |
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| 作者单位： | 陕西科技大学电气与信息工程学院,陕西西安,710021 |
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| 基金项目： | 国家自然科学基金资助项目(61076066); 陕西科技大学科研启动基金资助项目(BJ09-07),陕西科技大学自然科学基金资助项目(ZX09-31) |
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| 摘 要： | 通过在LED芯片上涂敷有机材料DCJTB,然后点YAG荧光粉的方法来研究白光LED分层点粉的激发光谱,其中DCJTB的混合质量分数分别为0、1%、2%、3%、5%、10%。结果表明,随着DCJTB混合浓度的增加,550～750nm波段的黄光、红光区域峰值明显增加且在600nm附近达到最大值,光谱色坐标从白光区域（0.2856、0.2883）向红光区域（0.4373、0.3377）移动,其LED的显色指数达到峰值88.2。因此采用分层点粉的方式可以使LED芯片发出的能量激发有机材料DCJTB,使得到的红光与芯片剩余能量激发YAG荧光粉的黄光组合得到显色指数较好的白光。
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| 关 键 词： | 有机材料 荧光粉 光谱 发光特性 |
Influence of organic fluorescence material DCJTB by coating stratified on luminescence of white LED |
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| BI Chang-dong,ZHANG Fang-hui,ZHANG Mai-li,MA Ying.Influence of organic fluorescence material DCJTB by coating stratified on luminescence of white LED[J].Journal of Functional Materials,2011,42(10). |
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| Authors: | BI Chang-dong ZHANG Fang-hui ZHANG Mai-li MA Ying |
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| Affiliation: | BI Chang-dong,ZHANG Fang-hui,ZHANG Mai-li,MA Ying(College of Electric and Communication,Shaanxi University of Science and Technology,Xi'an 710021,China) |
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| Abstract: | The excitation spectrum of white LED was studied in this paper.Here,the DCJTB was coated to the LED chips,then the YAG phosphor on top of DCJTB.Its proportion was 0,1%,2%,3%,5% and 10%.From the results of mixing concentration increasing,we found that the peaks were significant increase in the region of red and yellow(550-750nm),meanwhile it reached to the maximum near 600nm.What's more,spectral color coordinates moved from white region(0.2856,0.2883) to red region(0.4373,0.3377) and its color-rendering inde... |
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| Keywords: | organic materials phosphor spectrum luminescence |
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