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1. 厦门大学电子科学系 福建省半导体照明工程技术研究中心,福建 厦门,361005
2. 漳州职业技术学院 电子工程系, 福建 漳州 363000
纸质出版日期:2012-8-10,
收稿日期:2012-5-16,
修回日期:2012-6-3,
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戴树春, 郭自泉, 吕毅军, 陈忠. 中性色温下两基色、三基色荧光粉转换白光LED的光谱优化[J]. 发光学报, 2012,33(8): 873-878
DAI Shu-chun, GUO Zi-quan, LV Yi-jun, CHEN Zhong. Spectrum Optimization of Bi-color and Tri-color Phosphor-converted White LEDs in Neutral Correlated Color Temperature System[J]. Chinese Journal of Luminescence, 2012,33(8): 873-878
戴树春, 郭自泉, 吕毅军, 陈忠. 中性色温下两基色、三基色荧光粉转换白光LED的光谱优化[J]. 发光学报, 2012,33(8): 873-878 DOI: 10.3788/fgxb20123308.0873.
DAI Shu-chun, GUO Zi-quan, LV Yi-jun, CHEN Zhong. Spectrum Optimization of Bi-color and Tri-color Phosphor-converted White LEDs in Neutral Correlated Color Temperature System[J]. Chinese Journal of Luminescence, 2012,33(8): 873-878 DOI: 10.3788/fgxb20123308.0873.
针对中性色温4 870 K
考虑斯托克斯损失
研究了两基色、三基色的白光LED的光谱优化。结果表明:InGaN/GaN基蓝光LED激发YAG荧光粉合成的白光光视效能可高达483.5 lm/W
但显色性较差
计算的斯托克斯效率为83.9%。加入窄带红色荧光粉或红光LED
优化后的光视效能降低为343 lm/W
但显色指数升至94.7
同时计算得到该LED的斯托克斯效率为84.4%。对该优化的三基色LED光谱进行可调色温白光的特性分析
发现较高色温 (>4 000 K)对应的显色指数普遍高于低色温(<4 000 K)的显色指数。
The spectra of the bi-color and tri-color phosphor-converted white LED were optimized in the neutral correlated color temperature of 4 870 K with consideration of Stokes shift energy loss. The results showed that a high luminous efficacy of radiation up to 483 lm/W could be attained in the case of the white LED composed of blue chip and YAG phosphor but with a poor color quality and 83.9% Stokes efficiency. When a narrow-band red phosphor or LED chip was added to the bi-color white LED
a good color rendering index of 94.7 was gained with a reduced luminous efficacy of radiation 343 lm/W and a Stokes efficiency of 84.4%. Later
we characterized the performance of tunable-color-temperature tri-color white LED. It was found that the color rendering index was better when the correlated color temperature exceeded 4 000 K.
光谱学光谱优化相关色温显色指数光视效能
spectroscopyspectrum optimizationcorrelated color temperaturecolor rendering indexluminous efficacy of radiation
Narukawa Y, Ichikawa M, Sanga D, et al. White light emitting diodes with super-high luminous efficacy [J]. J. Phys. D: Applied Physics, 2010, 43(35):354002-1-6 .
Schlotter P, Schmidt R, Sohneider J. Luminescence conversion of blue light emitting diodes [J]. Appl. Phys. A: Materials Science & Processing, 1997, 64(4):417-418.
Song G H, Miao J W, Xu S W, et al. Photoluminescence properties of the Ce3+ -doped yttrium aluminum garnet glass-ceramic white LED [J]. Journal of Optoelectronics·Laser (光电子·激光), 2010, 21(12):1785-1789 (in Chinese).
Wang L L, Ni H Y, Zhang Q H. Luminescence and encapsulation properties of BaSi2O2N2 doped with divalent europium [J]. Chin. J. Lumin.(发光学报), 2012, 33(5):465-469 (in Chinese).
Liu L, Yuan X M, Xie A, et al. Synthesis and luminescent properties of Eu3+-activated novel borate-based red-emitting phosphors for white LED [J]. Chin. J. Lumin.(发光学报), 2011, 32(7):686-692 (in Chinese).
Zhao C, Ma M X, Han T, et al. The effect of doping Sr2+ on enhancement of red emission of Y2.78-xSrxGd0.1Al5O12∶0.06Ce3+ phosphors [J]. Chin. J. Lumin.(发光学报), 2011, 32(11):1099-1103 (in Chinese).
Zhao A P, Deng H, Liu F. Characterization of YAG∶Ce3+ phosphor synthesized via ultrasonic co-precipitation by different techniques [J]. Chin. J. Lumin.(发光学报), 2011, 32(11):1104-1108 (in Chinese).
Thornton W A. Luminosity and color-rendering capability of white light [J]. J. Opt. Soc. Am., 1971, 61(9):1155-1163.
ukauskas A, Vaicekauskas R, Ivanauskas F, et al. Optimization of white polychromatic semiconductor lamps [J]. Appl. Phys. Lett., 2002, 80(2):234-236 .
ukauskas A, Vaicekauskas R, Ivanauskas F, et al. Spectral optimization of phosphor-conversion light-emitting diodes for ultimate color rendering [J]. Appl. Phys. Lett., 2008, 93(5):051115-1-3.
Chhajed S, Xi Y, Li Y L, et al. Influence of junction temperature on chromaticity and color-rendering properties of trichromatic white-light sources based on light-emitting diodes [J]. J. Appl. Phys., 2005, 97(5):054506-1-8 .
Robertson A R. Computation of correlated color temperature and distribution temperature [J]. J. Opt. Soc. Am., 1968, 58(11):1528-1535.
Wu H B, Wang C L, He S M, et al. Research of color rendering of white LED based on red and green phosphors [J]. Acta optica sinica (光学学报), 2008, 28(9):1777-1782 (in Chinese).
Guo Z Q, Gao Y L, Lu Y J, et al. Spectrum optimization of tri-color white LEDs at fixed correlated color temperature [J]. Journal of Optoelectronics · Laser (光电子·激光), 2011, 22(7):992-996 (in Chinese).
Wen J, Wen Y M, Li P, et al. Dominant factor impacting the photoluminescence and electroluminescence spectra in AlInGaP LEDs [J]. Journal of Optoelectronics · Laser (光电子·激光), 2010, 21(5):659-663 (in Chinese).
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