| 近紫外芯片激发三基色荧光粉制作的白光LED |
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| 引用本文： | 宋国华,缪建文,姜斌,纪宪明,崔一平.近紫外芯片激发三基色荧光粉制作的白光LED[J].光电子．激光,2011(12):1779-1783. |
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| 作者姓名： | 宋国华 缪建文 姜斌 纪宪明 崔一平 |
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| 作者单位： | 与工程学院;南通大学理学院;南通大学化学化工学院;南通大学理学院;南通大学理学院;东南大学电子科学与工程学院 |
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| 基金项目： | 江苏省自然科学基金资助项目(BK2008183);南通市应用研究资助项目(K2010058);南通市公共技术服务平台资助项目(DE2010005);南通大学自然科学研究资助项目(10Z002) |
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| 摘 要： | 使用近紫外半导体芯片激发红绿蓝三基色荧光粉，制作了白光发光二极管（LED），并研究了其光电特性。结果表明，采用发射峰值波长分别在613、495和451nm的红绿蓝荧光粉，在波长400nm左右半导体芯片激发下的白光LED，其显色指数Ra最大为82；使用YAG荧光粉代替绿色荧光粉后，Ra提高到93。测试结果还表明，当工作电...
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| 关 键 词： | 白光发光二极管(LED) 近紫外芯片 荧光粉 相关色温(Tc) 显色指数(Ra) |
White LEDs from near-ultraviolet chip precoated with RGB phosphors |
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| SONG Guo-hu,MIAO Jian-wen,JIANG Bin,JI Xiang-ming and CUI Yi-ping.White LEDs from near-ultraviolet chip precoated with RGB phosphors[J].Journal of Optoelectronics·laser,2011(12):1779-1783. |
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| Authors: | SONG Guo-hu MIAO Jian-wen JIANG Bin JI Xiang-ming and CUI Yi-ping |
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| Institution: | College of Electronics and Engineering,Southeast University,Nanjing 220096,China;2.School of Science,Nantong Univeristy,Nantong 226007,China;School of Chemistry and Chemical Engineering,Nantong University,Nantong 226019,China);School of Science,Nantong Univeristy,Nantong 226007,China;School of Science,Nantong Univeristy,Nantong 226007,China;College of Electronics and Engineering,Southeast University,Nanjing 220096,China |
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| Abstract: | The white LEDs were fabricated based on RGB(red/green/blue) phosphors excited by near ultraviolet(n-UV) LED chips.The emission peaks of RGB phosphors are 613 nm,495 nm and 451 nm,respectively.The maximum color-rendering index (Ra) of the white-light LED is 82.It is also found that if the green phosphor is replaced by YAG phosphor,the white LEDs′ maximum Ra notably increases to 93.With the driving current changing from 5 mA to 60 mA,the change rates of correlated color temperature and color-rendering index are +9.7% and-1.0%,respectively. |
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| Keywords: | white light-emitting diode(LED) near-ultraviolet(n-UV) chip phosphors correlated color temperature(Tc) color-rendering index(Ra) |
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