Current-voltage characteristics of light-emitting diodes under optical and electrical excitation

作     者：文静 文玉梅 李平 李恋 

作者机构：Key Laboratory for Opto-Electronic Technologies & Systems of Ministry of EducationCollege of Opto-Electronic EngineeringChongqing University 

出 版 物：《Journal of Semiconductors》 (半导体学报（英文版）)

年 卷 期：2011年第32卷第8期

页      面：51-54页

核心收录：

学科分类：08[工学] 081304[工学-建筑技术科学] 0813[工学-建筑学] 0803[工学-光学工程] 

基　　金：Project supported by the National Natural Science Foundation of China(No.61006053) the National Science Foundation ofCQ CSTC (No.CSTC 2008BB3156) 

主　　题：current-voltage characteristics light-emitting diodes optical excitation electrical excitation junction temperature 

摘      要：The factors influencing the current-voltage（I-V） characteristics of light-emitting diodes（LEDs） are investigated to reveal the connection of I-V characteristics under optical excitation and those under electrical *** inspecting the I-V curves under optical and electrical excitation at identical injection current,it has been found that the I-V curves exhibit apparent differences in voltage ***,the differences are found to originate from the junction temperatures in diverse excitation *** results indicate that if the thermal effect of illuminating spot is depressed to an ignorable extent by using pulsed light,the junction temperature will hardly deflect from that under optical excitation,and then the I-V characteristics under two diverse excitation ways will be the same.