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

fYear

2015

fDate

June 29 2015-July 2 2015

Firstpage

430

Lastpage

433

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Physical and Failure Analysis of Integrated Circuits (IPFA), 2015 IEEE 22nd International Symposium on the

Conference_Location

Hsinchu

Type

conf

DOI

10.1109/IPFA.2015.7224418

Filename

7224418