Characteristics of high power LEDs at high and low temperature |
| |
Authors: | Guo Weling Jia Xuejiao Yin Fei Cui Bifeng Gao Wei Liu Ying Yan Weiwei |
| |
Affiliation: | Beijing Optoelectronics Technology Laboratory, Beijing University of Technology, Beijing 100124, China |
| |
Abstract: | The high power light emitting diodes (LEDs) based on InGaN and AIGaInP individually are tested on line at temperatures from -30 to 100℃. The data are fitted to measure the relationship between temperature and the properties of forward voltage, relative light intensity, wavelength, and spectral bandwidth of two different kinds of LEDs. Why these properties changed and how these changes reflected on applications are also analyzed and compared with each other. The results show that temperature has a great influence on the performance and application of power LEDs. For applications at low temperature, the forward voltage rising and the peak wavelength blue-shifting must be considered; and at high temperature, the relative light intensity decreasing and the peak wavelength red-shifting must be considered. |
| |
Keywords: | power LEDs low temperature forward voltage peak wavelength |
本文献已被 CNKI 万方数据 等数据库收录! |
| 点击此处可从《半导体学报》浏览原始摘要信息 |
|
点击此处可从《半导体学报》下载全文 |
|