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作者机构:北京工业大学信息学院北京市光电子技术实验室北京100022 中国科学院半导体研究所北京100083
出 版 物:《Journal of Semiconductors》 (半导体学报(英文版))
年 卷 期:2002年第23卷第6期
页 面:628-631页
核心收录:
主 题:tunnel junction AlGaInP high brightness LED MOCVD
摘 要:The n type GaAs substrates are used and their conductive type is changed to p type by tunnel junction for AlGaInP light emitting diodes(TJ LED),then n type GaP layer is used as current spreading *** resistivity of the n type GaP is lower than that of p type,the effect of current spreading layer is enhanced and the light extraction efficiency is increased by the n type GaP current spreading *** TJ LED with 3μm n type GaP current spreading layer,experimental results show that compared with conventional LED with p type GaP current spreading layer,light output power is increased for 50% at 20mA and for 66 7% at 100mA.