Phosphor free high-luminous-efficiency white light-emitting diodes composed of InGaN multi-quantum well
Phosphor free high-luminous-efficiency white light-emitting diodes composed of InGaN multi-quantum well
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DOI：
10.1143/jap.41.l246
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发表时间：
2002-03-01
期刊：
影响因子：
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通讯作者：
Mukai, T
中科院分区：
文献类型：
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作者：
Yamada, M;Narukawa, Y;Mukai, T
我们制作了两种由InGaN多量子阱（MQW）组成的高效白色发光二极管（LED），它们在没有磷光体的情况下发射两种或三种不同颜色的光。1型白色LED从MQW有源层发射两种颜色（蓝色和黄色）的光，而2型LED发射三种颜色（蓝色、绿色和红色）的光。室温下，正向电流为20 mA时，第一型白色LED的色温（T-cp）、平均显色性（R-a）和发光效率分别为7600 K、42.7和11.041 m/W。在室温下正向电流为20 mA时，T-cp、R-a和发光效率分别为5060 K、80.2和7.94 lm/W。分别
We fabricated two types of high-efficiency white light-emitting diodes (LEDs) composed of an InGaN multi-quantum well (MQW), which emit light of two or three different colors without phosphors. The Type-1 white LED emits light of two colors (blue and yellow) from the MQW active layer, while the Type-2 LED emits light of three colors (blue, green and red). When the Type-1 white LED was operated at a forward current of 20 mA at room temperature, the color temperature (T-cp), average color rendering (R-a) and luminous efficiency were 7600 K, 42.7 and 11.041m/W, respectively. When the Type-2 white LED was operated at a forward current of 20 mA at room temperature, T-cp, R-a and luminous efficiency were 5060 K, 80.2 and 7.94 lm/W. respectively.