Efficiency enhancement in a light-emitting diode with a two-dimensional surface grating photonic crystal

被引：117

作者：

Ichikawa, H ^{[1
]}

Baba, T ^{[1
]}

机构：

[1] Yokohama Natl Univ, Dept Elect & Comp Engn, Yokohama, Kanagawa 2408501, Japan

来源：

APPLIED PHYSICS LETTERS | 2004年 / 84卷 / 04期

关键词：

D O I：

10.1063/1.1644033

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate a light-emitting diode exhibiting 1.7-2.7-fold enhancement in light extraction efficiency compared with that for a planer device. It has a two-dimensional surface grating photonic crystal, which diffracts internal light with a large solid angle into the escape light cone. Due to its shallow grating separated from the active layer and micron order lattice constant, the fabrication process is simple, applicable to arbitrary semiconductor devices, and free from process-induced nonradiative recombinations. (C) 2004 American Institute of Physics.

引用

页码：457 / 459

页数：3

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