照明工程学报2017，Vol.28Issue(1)：1-4,29,5.DOI:10.3969∕j.issn.1004-440X.2017.01.001
五基色LED照明光源技术进展
Progress of Five Primary Colours LED Lighting Source Technology
摘要
Abstract
The current LED white lighting is based on phosphor conversion of blue LEDs, although the efficiency is much higher than that of incandescent and fluorescent lamps, the main weak point is the difficulty of attaining the balance among color rendering index (CRI), color temperature (Tc) and light efficiency, and too much blue light may easily cause visual fatigue. Mixing multi-colors ( Red/yellow/green/cyan/blue) LEDs to form white light can provides us a healthy, comfortable and phosphor-free light source with low Tc , high CRI and high efficiency, which is a high quality light source for next generation. To realize it, the key point is to make yellow LEDs efficient. Recently, we make a significant breakthrough on improving the efficiency of the yellow LEDs, efficient InGaN based yellow LEDs with 21. 5% wall-plug efficiency ( WPE) at 565 nm and 20 A/cm2 are realized on silicon substrate, the luminous efficiency is 130 lm/W which is far better than the highest level of the public reporting. By mixing blue, cyan, green, yellow and red LEDs, white LEDs with CRI up to 94. 8, Tc of 3263K and efficacy above 100. 5 lm/W were obtained. The performance is comparable with those commercialized white LEDs. The phosphor free five primary colors LED lighting technology can save the rare earth materials. It has important practical value and strategic significance, and it will show its advantages in the fields of light communication, scene lighting and smart lighting.关键词
五基色/高品质/LED照明/黄光LEDKey words
five primary colors/high quality/LED lighting/yellow LED分类
信息技术与安全科学引用本文复制引用
刘军林,莫春兰,张建立,王光绪,徐龙权,丁杰,李树强,王小兰,吴小明..五基色LED照明光源技术进展[J].照明工程学报,2017,28(1):1-4,29,5.基金项目
国家重点研发计划 (批准号: 2016YFB0400600), 国家自然科学基金 (批准号: 61334001) （批准号: 2016YFB0400600）
