交流发光二极管光源的工作特性研究  

Research on Operational Factors of AC LED

作　　者：高英明[1] 邹念育[1] 张环月[2] 贺晓阳[1] 李德胜[1] 

机构地区：[1]大连工业大学光子学研究所,辽宁大连116034 [2]大连理工大学材料科学与工程学院,辽宁大连116023

出　　处：《半导体光电》2011年第5期606-609,共4页Semiconductor Optoelectronics

基　　金："十二五"国家科技支撑计划项目(2011BAE01B06);大连市科技计划项目(2009A18GX016);辽宁省高等学校优秀人才与支持计划项目(LR201006)

摘　　要：为得到交流发光二极管(AC LED)内部晶粒参数与其工作特性的关系,讨论了ACLED光源的内部结构和应用电路模型,分析了AC LED光源的工作特性,给出AC LED发光效率的解析表达式,理论上说明了AC LED的发光效率低于单颗LED晶粒的电光转换效率,且光效随着LED晶粒串联数量的增加而提高,AC LED的光效与限流电阻无关,增加串联晶粒的个数可减小限流电阻的损耗。因此,AC LED制造过程中宜降低晶粒的导通电压,以增加晶粒个数。The interior structure and application circuit of AC LED are discussed,its operational factors and analytic expressions are presented,from which it can be concluded that the luminous efficiency of the whole AC LED is lower than that of single die and the luminous efficiency increases with the increase of die number.AC LED luminous efficiency has no connection with the current-limiting resistor and the loss of the resistor decreases with the increase of die number,so the forward voltage of die should be decreased in the fabricating process so as to increase its number.

关 键 词：LED光源 交流发光二级管光源 发光效率 

分 类 号：TN383[电子电信—物理电子学]