Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes

Sun Kyung Kim; Hyun Don Song; Ho Seok Ee; Hyun Min Choi; Hyun Kyong Cho; Yong Hee Lee; Hong Gyu Park

doi:10.1063/1.3097017

Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes

Sun Kyung Kim, Hyun Don Song, Ho Seok Ee, Hyun Min Choi, Hyun Kyong Cho, Yong Hee Lee, Hong Gyu Park

Department of Physics

Research output: Contribution to journal › Article › peer-review

25 Citations (Scopus)

Abstract

We demonstrate light extraction from metal reflector-based AlGaInP photonic crystal (PhC) light-emitting diodes (LEDs). The photons reflected by a high-reflectivity, small-absorption, bottom Ag mirror steadily interact with the PhC, and thus enhanced light extraction is achieved. The square lattice PhC patterns are fabricated on an upper n -doped AlGaInP surface with a depth of 500 nm. An optical power measurement using an integration sphere shows that the extraction efficiency of the PhC LED is ∼1.8 times larger than that of the nonpatterned LED. A three-dimensional finite difference time domain simulation is performed to understand the output enhancement extracted by the PhC and the effect of internal absorption.

Original language	English
Article number	101102
Journal	Applied Physics Letters
Volume	94
Issue number	10
DOIs	https://doi.org/10.1063/1.3097017
Publication status	Published - 2009

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.3097017

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title = "Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes",

abstract = "We demonstrate light extraction from metal reflector-based AlGaInP photonic crystal (PhC) light-emitting diodes (LEDs). The photons reflected by a high-reflectivity, small-absorption, bottom Ag mirror steadily interact with the PhC, and thus enhanced light extraction is achieved. The square lattice PhC patterns are fabricated on an upper n -doped AlGaInP surface with a depth of 500 nm. An optical power measurement using an integration sphere shows that the extraction efficiency of the PhC LED is ∼1.8 times larger than that of the nonpatterned LED. A three-dimensional finite difference time domain simulation is performed to understand the output enhancement extracted by the PhC and the effect of internal absorption.",

author = "Kim, {Sun Kyung} and Song, {Hyun Don} and Ee, {Ho Seok} and Choi, {Hyun Min} and Cho, {Hyun Kyong} and Lee, {Yong Hee} and Park, {Hong Gyu}",

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T1 - Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes

AU - Kim, Sun Kyung

AU - Song, Hyun Don

AU - Ee, Ho Seok

AU - Choi, Hyun Min

AU - Cho, Hyun Kyong

AU - Lee, Yong Hee

AU - Park, Hong Gyu

PY - 2009

Y1 - 2009

N2 - We demonstrate light extraction from metal reflector-based AlGaInP photonic crystal (PhC) light-emitting diodes (LEDs). The photons reflected by a high-reflectivity, small-absorption, bottom Ag mirror steadily interact with the PhC, and thus enhanced light extraction is achieved. The square lattice PhC patterns are fabricated on an upper n -doped AlGaInP surface with a depth of 500 nm. An optical power measurement using an integration sphere shows that the extraction efficiency of the PhC LED is ∼1.8 times larger than that of the nonpatterned LED. A three-dimensional finite difference time domain simulation is performed to understand the output enhancement extracted by the PhC and the effect of internal absorption.

AB - We demonstrate light extraction from metal reflector-based AlGaInP photonic crystal (PhC) light-emitting diodes (LEDs). The photons reflected by a high-reflectivity, small-absorption, bottom Ag mirror steadily interact with the PhC, and thus enhanced light extraction is achieved. The square lattice PhC patterns are fabricated on an upper n -doped AlGaInP surface with a depth of 500 nm. An optical power measurement using an integration sphere shows that the extraction efficiency of the PhC LED is ∼1.8 times larger than that of the nonpatterned LED. A three-dimensional finite difference time domain simulation is performed to understand the output enhancement extracted by the PhC and the effect of internal absorption.

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JO - Applied Physics Letters

JF - Applied Physics Letters

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ER -

Metal mirror assisting light extraction from patterned AlGaInP light-emitting diodes

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