交流发光二极管光电特性研究.pdfVIP

30 12 V ol . 30 , No . 12 2010 12 ACTA OPTICA SINICA December, 20 10 : ( 2010) 交流发光二极管光电特性的研究 陈莹亮 吕毅军 高玉琳 林 岳 陈焕庭 雷瑞瑞 郭自泉 陈国龙 陈 忠 ( , , 361005) , ( ACL ED) A CL ED , , , , GaN L ED , ; ; ; ; T N 312+ . 8 A doi: 10. 37 88/ AOS20 10 30 12 . 35 86 Photoelectric Properties of AlternatingCurrent L ightEmitting Diodes Chen Yingliang Lu Yijun Gao Yulin Lin Yue Chen Huan ing Lei Ruirui Guo Ziquan Chen Guolong Chen Zhong ( F uj a n Eng neer ng Resea r ch Cen ter f or Sol dSta te L ght n g , Depa r tm ent of Phy s cs , X a m en Un v er s t y , X a m en , Fu j an 361005, Ch na ) Abstract The op ical and elec rical parame ers of ACLEDs driv en by AC and DC source were es ed a differen al erna ingcurren v ol age, frequency and heasink empera ure respec iv ely . I is found ha he values of luminous flux, op ical power and luminous efficacy of device driv en by DC source are larger han hose by ACsource in he same ac iv e power . Because of hermal effec s, efficiency droop and equivalen series resis ances, he luminous efficacy of ACLEDs firs ly increases and hen decreases wi h he ac ive power increases. By changing he empera ure of hea sink, he infcuence of empera ures on peak waveleng h, op ical power and luminous efficacy of ACL EDs were fur her discussed. Key words op oelec ronics; al erna ingcurren ligh emi ing diodes ( ACLEDs ) ; solids a e ligh ing es ; luminous efficacy; ac ive power 1 , ( H g hpo w er ) , ( L ED) L ED[ 3] , L ED ( ) [ 1, 2]