Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode

Michael A. Mastro; Chul Soo Kim; Mijin Kim; Josh CalDWell; Ron T. Holm; Igor VUrgaftman; Jihyun Kim; Charles R. Eddy; Jerry R. Meyer

doi:10.1143/JJAP.47.7827

Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode

Michael A. Mastro, Chul Soo Kim, Mijin Kim, Josh CalDWell, Ron T. Holm, Igor VUrgaftman, Jihyun Kim, Charles R. Eddy, Jerry R. Meyer

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

10 Citations (Scopus)

Abstract

A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of ≈λ/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.

Original language	English
Pages (from-to)	7827-7830
Number of pages	4
Journal	Japanese journal of applied physics
Volume	47
Issue number	10 PART 1
DOIs	https://doi.org/10.1143/JJAP.47.7827
Publication status	Published - 2008 Oct

Keywords

GaN
Micro cavity light-emitting diode
Photonic crystal

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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10.1143/JJAP.47.7827

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@article{57399031b9834581978624010fe9d0bd,

title = "Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode",

abstract = "A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of ≈λ/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.",

keywords = "GaN, Micro cavity light-emitting diode, Photonic crystal",

author = "Mastro, {Michael A.} and Kim, {Chul Soo} and Mijin Kim and Josh CalDWell and Holm, {Ron T.} and Igor VUrgaftman and Jihyun Kim and Eddy, {Charles R.} and Meyer, {Jerry R.}",

year = "2008",

month = oct,

doi = "10.1143/JJAP.47.7827",

language = "English",

volume = "47",

pages = "7827--7830",

journal = "Japanese journal of applied physics",

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publisher = "Japan Society of Applied Physics",

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T1 - Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode

AU - Mastro, Michael A.

AU - Kim, Chul Soo

AU - Kim, Mijin

AU - CalDWell, Josh

AU - Holm, Ron T.

AU - VUrgaftman, Igor

AU - Kim, Jihyun

AU - Eddy, Charles R.

AU - Meyer, Jerry R.

PY - 2008/10

Y1 - 2008/10

N2 - A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of ≈λ/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.

AB - A two-dimensional (2D) ZnS photonic crystal was deposited on the surface of a one-dimensional (1D) III-nitride micro cavity light-emitting diode (LED), to intermix the light extraction features of both structures (1D+2D). The deposition of an ideal micro-cavity optical thickness of ≈λ/2 is impractical for III-nitride LEDs, and in realistic multi-mode devices a large fraction of the light is lost to internal refraction as guided light. Therefore, a 2D photonic crystal on the surface of the LED was used to diffract and thus redirect this guided light out of the semiconductor over several hundred microns. Additionally, the employment of a post-epitaxy ZnS 2D photonic crystal avoided the typical etching into the GaN:Mg contact layer, a procedure which can cause damage to the near surface.

KW - GaN

KW - Micro cavity light-emitting diode

KW - Photonic crystal

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U2 - 10.1143/JJAP.47.7827

DO - 10.1143/JJAP.47.7827

M3 - Article

AN - SCOPUS:59149099290

SN - 0021-4922

VL - 47

SP - 7827

EP - 7830

JO - Japanese journal of applied physics

JF - Japanese journal of applied physics

IS - 10 PART 1

ER -

Zinc sulphide overlayer two-dimensional photonic crystal for enhanced extraction of light from a micro cavity light-emitting diode

Abstract

Keywords

ASJC Scopus subject areas

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