Azimuthal anisotropy of light extraction from photonic crystal light-emitting diodes

Chun Feng Lai; Hao-Chung Kuo; C. H. Chao; H. T. Hsueh; J. F T Wang; W. Y. Yeh; J. Y. Chi; Tien-chang Lu; S. C. Wang

doi:10.1002/pssc.200778453

Azimuthal anisotropy of light extraction from photonic crystal light-emitting diodes

Chun Feng Lai, Hao-Chung Kuo, C. H. Chao, H. T. Hsueh, J. F T Wang, W. Y. Yeh, J. Y. Chi, Tien-chang Lu, S. C. Wang

Department of Photonics

Research output: Contribution to journal › Conference article › peer-review

Abstract

Photonic crystal (PhC) light-emitting diodes (LEDs) exhibiting anisotropic light extraction have been investigated experimentally and theoretically. It is found that the anisotropic light extraction strongly depends on the lattice constant and orientation. Optical images of the anisotropy in the azimuthal direction are obtained using annular structure with triangular lattice. 6-fold symmetric light extraction patterns with varying number of petals are observed. More petals in multiple of 6 appear in the observed image with lattice constant increasing. This anisotropic behavior suggests a new means to optimize the PhC design of GaN LED for light extraction.

Original language	English
Pages (from-to)	2099-2101
Number of pages	3
Journal	Physica Status Solidi (C) Current Topics in Solid State Physics
Volume	5
Issue number	6
DOIs	https://doi.org/10.1002/pssc.200778453
State	Published - 1 Dec 2008
Event	7th International Conference of Nitride Semiconductors, ICNS-7 - Las Vegas, NV, United States Duration: 16 Sep 2007 → 21 Sep 2007

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10.1002/pssc.200778453

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@article{8d4c72945b8c409386962639cbfe1243,

title = "Azimuthal anisotropy of light extraction from photonic crystal light-emitting diodes",

abstract = "Photonic crystal (PhC) light-emitting diodes (LEDs) exhibiting anisotropic light extraction have been investigated experimentally and theoretically. It is found that the anisotropic light extraction strongly depends on the lattice constant and orientation. Optical images of the anisotropy in the azimuthal direction are obtained using annular structure with triangular lattice. 6-fold symmetric light extraction patterns with varying number of petals are observed. More petals in multiple of 6 appear in the observed image with lattice constant increasing. This anisotropic behavior suggests a new means to optimize the PhC design of GaN LED for light extraction.",

author = "Lai, {Chun Feng} and Hao-Chung Kuo and Chao, {C. H.} and Hsueh, {H. T.} and Wang, {J. F T} and Yeh, {W. Y.} and Chi, {J. Y.} and Tien-chang Lu and Wang, {S. C.}",

year = "2008",

month = dec,

day = "1",

doi = "10.1002/pssc.200778453",

language = "English",

volume = "5",

pages = "2099--2101",

journal = "Physica Status Solidi (C) Current Topics in Solid State Physics",

issn = "1862-6351",

publisher = "Wiley-VCH Verlag",

number = "6",

note = "null ; Conference date: 16-09-2007 Through 21-09-2007",

}

Azimuthal anisotropy of light extraction from photonic crystal light-emitting diodes. / Lai, Chun Feng; Kuo, Hao-Chung; Chao, C. H.; Hsueh, H. T.; Wang, J. F T; Yeh, W. Y.; Chi, J. Y.; Lu, Tien-chang; Wang, S. C.

In: Physica Status Solidi (C) Current Topics in Solid State Physics, Vol. 5, No. 6, 01.12.2008, p. 2099-2101.

Research output: Contribution to journal › Conference article › peer-review

TY - JOUR

T1 - Azimuthal anisotropy of light extraction from photonic crystal light-emitting diodes

AU - Lai, Chun Feng

AU - Kuo, Hao-Chung

AU - Chao, C. H.

AU - Hsueh, H. T.

AU - Wang, J. F T

AU - Yeh, W. Y.

AU - Chi, J. Y.

AU - Lu, Tien-chang

AU - Wang, S. C.

PY - 2008/12/1

Y1 - 2008/12/1

N2 - Photonic crystal (PhC) light-emitting diodes (LEDs) exhibiting anisotropic light extraction have been investigated experimentally and theoretically. It is found that the anisotropic light extraction strongly depends on the lattice constant and orientation. Optical images of the anisotropy in the azimuthal direction are obtained using annular structure with triangular lattice. 6-fold symmetric light extraction patterns with varying number of petals are observed. More petals in multiple of 6 appear in the observed image with lattice constant increasing. This anisotropic behavior suggests a new means to optimize the PhC design of GaN LED for light extraction.

AB - Photonic crystal (PhC) light-emitting diodes (LEDs) exhibiting anisotropic light extraction have been investigated experimentally and theoretically. It is found that the anisotropic light extraction strongly depends on the lattice constant and orientation. Optical images of the anisotropy in the azimuthal direction are obtained using annular structure with triangular lattice. 6-fold symmetric light extraction patterns with varying number of petals are observed. More petals in multiple of 6 appear in the observed image with lattice constant increasing. This anisotropic behavior suggests a new means to optimize the PhC design of GaN LED for light extraction.

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DO - 10.1002/pssc.200778453

M3 - Conference article

AN - SCOPUS:77951227897

VL - 5

SP - 2099

EP - 2101

JO - Physica Status Solidi (C) Current Topics in Solid State Physics

JF - Physica Status Solidi (C) Current Topics in Solid State Physics

SN - 1862-6351

IS - 6

Y2 - 16 September 2007 through 21 September 2007

ER -