Toward Ultrahigh-Efficiency aluminum oxide microcavity light-emitting diodes:: Guided mode extraction by photonic crystals

被引:69
作者
Rattier, M [1 ]
Benisty, H
Stanley, RP
Carlin, JF
Houdré, R
Oesterle, U
Smith, CJM
Weisbuch, C
Krauss, TF
机构
[1] Ecole Polytech, Phys Mat Condensee Lab, F-91128 Palaiseau, France
[2] Ctr Suisse Elect & Microtech, CH-2007 Neuchatel, Switzerland
[3] Swiss Fed Inst Technol, Inst Micro & Optoelect, CH-1015 Lausanne, Switzerland
[4] Intense Photon Ltd, High Blantyre G72 0UX, Scotland
[5] Univ St Andrews, Sch Phys & Astron, St Andrews KY16 9SS, Fife, Scotland
关键词
aluminum oxide; gratings; high-efficiency LEDs; microcavities; outcouplers; photonic crystals;
D O I
10.1109/2944.999176
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
In this paper, we present an improved version of microcavity light-emitting diodes, relying on the use of a low-index material, aluminum oxide. Our work addresses in particular the injection scheme required by the insulating nature of this oxide. The device we fabricated demonstrated efficiencies up to 28% in air, using only planar technology. In these structures, most of the emission is guided. We further propose to include photonic crystals to extract this guided light. The design of the photonic crystals are discussed and substantiated by photoluminescence-based experiments.
引用
收藏
页码:238 / 247
页数:10
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