Title :
Study of junction temperature effect on electrical power of light-emitting diode (LED) devices
Author :
Xuehui Tao ; Bin Yang
Author_Institution :
Dept. of Signal & Control Eng., Soochow Univ., Suzhou, China
fDate :
June 29 2015-July 2 2015
Abstract :
Junction temperature affects photometric and electrical performance of LED devices. In this paper, junction temperature effect on electrical power is investigated. The theoretical results and measurement results indicate the consumed electrical power of an LED device not only relates to injection current, but also depends on junction temperature. A mathematic model of electrical power of LED devices, considering the combined effect of junction temperature and injection current, is proposed. The proposed electrical power model has been verified with experimental measurements. It is helpful for LED performance evaluation.
Keywords :
light emitting diodes; mathematical analysis; semiconductor device measurement; semiconductor device models; LED; electrical performance; electrical power model; injection current; junction temperature effect; light-emitting diode; mathematic model; photometric performance; Current measurement; Junctions; Light emitting diodes; Mathematical model; Power systems; Temperature measurement; Voltage measurement;
Conference_Titel :
Physical and Failure Analysis of Integrated Circuits (IPFA), 2015 IEEE 22nd International Symposium on the
Conference_Location :
Hsinchu
DOI :
10.1109/IPFA.2015.7224418
