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

Hiroyuki Ichikawa | Zendy; Toshihiko Baba | Zendy

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

Author(s) -

Hiroyuki Ichikawa,

Toshihiko Baba

Publication year - 2004

Publication title -

applied physics letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.182

H-Index - 442

eISSN - 1077-3118

pISSN - 0003-6951

DOI - 10.1063/1.1644033

Subject(s) - grating , photonic crystal , materials science , optoelectronics , light emitting diode , optics , diffraction grating , diode , photonics , semiconductor , lattice constant , fabrication , diffraction , physics , medicine , alternative medicine , pathology

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

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