Spectral Optimization of Phosphor-Coated White LEDs for Color Rendering and Luminous Efficacy
Spectral Optimization of Phosphor-Coated White LEDs for Color Rendering and Luminous Efficacy
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DOI：
10.1109/lpt.2014.2326733
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发表时间：
2014-06
影响因子：
2.6
通讯作者：
Guoxing He;Ju Tang
中科院分区：
文献类型：
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作者：
Guoxing He;Ju Tang
相关色温度可调式磷光剂涂层的白色（PC-W）发光二极管（LED）的发光功效的优化模型，该二极管（LED）由蓝色LED，磷剂和红色LED（包括下降转换能量损失）组成，已在指定的颜色渲染索引的约束下开发。提出了优化的峰值波长和全宽度，每种颜色成分的一半最大尺寸，以及PC-W LED的光度和比色性能，以最大程度地在2700至6500 K的相关色温下在各种颜色渲染指数下最大化发光功效。已经发现，在良好的颜色渲染下，四型PC-W LED的发光功效高于三色PC-W LED的发光功效。
An optimization model for luminous efficacy of a correlated color temperature tunable phosphor-coated white (pc-W) light-emitting diode (LED) consisting of a blue LED, the phosphors, and a red LED, including down-conversion energy loss, has been developed under the constraint of the designated color rendering index. The optimized peak wavelength and full-width at half-maximum of each color component, as well as photometric and colorimetric performances of the pc-W LEDs for maximizing the luminous efficacy under various color rendering indices at a correlated color temperature of 2700 to 6500 K were presented. It has been found that the luminous efficacy for the tetrachromatic pc-W LED is higher than that for the trichromatic pc-W LED under good color rendering.