Design of vertically-stacked polychromatic light-emitting diodes

被引：24
|
作者：
Hui, K. N. [1 ]
Wang, X. H. [1 ]
Li, Z. L. [1 ]
Lai, P. T. [1 ]
Choi, H. W. [1 ]
机构：
[1] Univ Hong Kong, Dept Elect & Elect Engn, Semicond Display & Lighting Lab, Hong Kong, Hong Kong, Peoples R China
来源：
OPTICS EXPRESS | 2009年 / 17卷 / 12期
关键词：
COLOR; LEDS;
D O I：
10.1364/OE.17.009873
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
A new design for a polychromatic light-emitting diode (LED) is proposed and demonstrated. LED chips of the primary colors are physically stacked on top of each other. Light emitted from each layer of the stack passes through each other, and thus is mixed naturally without additional optics. As a color-tunable device, a wide range of colors can be generated, making it suitable for display purposes. As a phosphor-free white light LED, luminous efficacy of 30 1m/watt was achieved.
引用
收藏
页码：9873 / 9878
页数：6
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