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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. © 2004 American Institute of Physics.
Published in:
Applied Physics Letters
(Volume:84
,
Issue:
4
)
Date of Publication: Jan 2004
- Page(s):
- 457 - 459
- ISSN :
- 0003-6951
- Digital Object Identifier :
- 10.1063/1.1644033
- Product Type:
- Journals & Magazines
- Date of Current Version :
- 18 June 2009
- Issue Date :
- Jan 2004
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