Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor
Warm-white light-emitting diode with yellowish orange SiAlON ceramic phosphor
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DOI：
10.1364/ol.29.002001
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发表时间：
2004-09-01
期刊：
影响因子：
3.6
通讯作者：
Suehiro, T
中科院分区：
文献类型：
--
作者：
Sakuma, K;Omichi, K;Suehiro, T
介绍了一种不掺杂不同种类荧光粉的暖白色发光二极管（LED）。提出了一种由蓝光LED芯片和波长转换荧光粉组成的方法。该荧光粉是新开发的一种高效黄橙色CaEuSiAlON陶瓷荧光粉。CIE1931色度坐标（x, y）分别为（0.458,0.414），色温为2750 K，室温下正向偏置电流为20 mA的发光效率为25.9 lm/W。由于氮化氧荧光粉具有更好的热稳定性，因此组装的LED的色度比使用传统氧化荧光粉（YAG:Ce）的LED的色度更热稳定。(C) 2004美国光学学会。
A warm-white light-emitting diode (LED) without blending of different kinds of phosphors is demonstrated. An approach that consists of a blue LED chip and a wavelength-conversion phosphor is carried out. The phosphor is a newly developed yellowish orange CaEuSiAlON ceramic phosphor with high efficiency. The CIE1931 chromaticity coordinates (x, y) are (0.458, 0.414), the color temperature is 2750 K, and the luminous efficacy of this LED is 25.9 lm/W at room temperature and with a forward-bias current of 20 mA. The chromaticity of the assembled LED is more thermally stable than that of a LED with a conventional oxide phosphor (YAG:Ce) because of the better thermal stability of the oxynitride phosphor. (C) 2004 Optical Society of America.