Efficient light-emitting diodes with radial outcoupling taper at 980 and 630 nm emission wavelength

被引：6

作者：

Schmid, W ^{[1
]}

Scherer, M ^{[1
]}

Jäger, R ^{[1
]}

Stauss, P ^{[1
]}

Streubel, K ^{[1
]}

Ebeling, KJ ^{[1
]}

机构：

[1] Osram Opto Semicond, D-93049 Regensburg, Germany

来源：

LIGHT-EMITTING DIODES: RESEARCH MANUFACTURING, AND APPLICATIONS V | 2001年 / 4278卷

关键词：

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

D O I：

10.1117/12.426839

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 efficiencies of almost 40 % for outcoupling via a planar surface or quantum and wallplug efficiencies of 52 % and 48 %, respectively, for encapsulated devices. Neglecting reabsorption; approximative equations yield optimum design parameters.

引用

页码：109 / 118

页数：4

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