45% quantum efficiency light-emitting diodes with radial outcoupling taper

被引：10

作者：

Schmid, W ^{[1
]}

Eberhard, F ^{[1
]}

Jäger, R ^{[1
]}

King, R ^{[1
]}

Miller, M ^{[1
]}

Joos, J ^{[1
]}

Ebeling, KJ ^{[1
]}

机构：

[1] Univ Ulm, Dept Optoelect, D-89069 Ulm, Germany

来源：

LIGHT-EMITTING DIODES: RESEARCH, MANUFACTURING, AND APPLICATIONS IV | 2000年 / 3938卷

关键词：

light-emitting diodes; high-efficiency; thin-film; outcoupling taper;

D O I：

10.1117/12.382841

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have investigated efficient light outcoupling from light-emitting diodes (LEDs) by introducing lateral tapers. The concept is based on light generation in the very central area of a circularly symmetric structure. After propagating between two highly reflecting mirrors light is outcoupled in a tapered mesa region. By proper processing we achieve quantum and wallplug efficiencies of almost 30% for outcoupling via a planar surface or, respectively, 45% and 44% for encapsulated devices.

引用

收藏

页码：90 / 97

页数：8

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