Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating

Myung Su Seok; Seok Jae Yoo; Jong Ho Choe; Q. Han Park; Yong Tae Moon

doi:10.3938/jkps.68.462

Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating

Myung Su Seok, Seok Jae Yoo, Jong Ho Choe, Q. Han Park, Yong Tae Moon

Department of Physics

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

3 Citations (Scopus)

Abstract

The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction efficiency. The use of such a LED structure will reduce both the internal reflection and the impedance mismatch, leading to a 3.2-fold enhancement in the light extraction efficiency compared to that for bare planar LEDs. We also present an improved method of modeling the light emission from the LED’s active layers to numerically calculate the light extraction efficiency of LEDs.

Original language	English
Pages (from-to)	462-466
Number of pages	5
Journal	Journal of the Korean Physical Society
Volume	68
Issue number	3
DOIs	https://doi.org/10.3938/jkps.68.462
Publication status	Published - 2016 Feb 1

Keywords

Anti-reflection coatings
Light-emitting diodes
Total internal reflection

ASJC Scopus subject areas

Physics and Astronomy(all)

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10.3938/jkps.68.462

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title = "Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating",

abstract = "The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction efficiency. The use of such a LED structure will reduce both the internal reflection and the impedance mismatch, leading to a 3.2-fold enhancement in the light extraction efficiency compared to that for bare planar LEDs. We also present an improved method of modeling the light emission from the LED{\textquoteright}s active layers to numerically calculate the light extraction efficiency of LEDs.",

keywords = "Anti-reflection coatings, Light-emitting diodes, Total internal reflection",

author = "Seok, {Myung Su} and Yoo, {Seok Jae} and Choe, {Jong Ho} and Park, {Q. Han} and Moon, {Yong Tae}",

note = "Funding Information: This research was supported by the NanoMaterial Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) (No. 2011-0020205) and by the Center for Advanced Meta- Materials (CAMM) funded by the Ministry of Science, ICT and Future Planning as a Global Frontier Project (CAMM-2014M3A6B3063710). Publisher Copyright: {\textcopyright} 2016, The Korean Physical Society. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

year = "2016",

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doi = "10.3938/jkps.68.462",

language = "English",

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journal = "Journal of the Korean Physical Society",

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T1 - Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating

AU - Seok, Myung Su

AU - Yoo, Seok Jae

AU - Choe, Jong Ho

AU - Park, Q. Han

AU - Moon, Yong Tae

N1 - Funding Information: This research was supported by the NanoMaterial Technology Development Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT & Future Planning (MSIP) (No. 2011-0020205) and by the Center for Advanced Meta- Materials (CAMM) funded by the Ministry of Science, ICT and Future Planning as a Global Frontier Project (CAMM-2014M3A6B3063710). Publisher Copyright: © 2016, The Korean Physical Society. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016/2/1

Y1 - 2016/2/1

N2 - The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction efficiency. The use of such a LED structure will reduce both the internal reflection and the impedance mismatch, leading to a 3.2-fold enhancement in the light extraction efficiency compared to that for bare planar LEDs. We also present an improved method of modeling the light emission from the LED’s active layers to numerically calculate the light extraction efficiency of LEDs.

AB - The results of our analysis, which was done by using the finite-difference, time-domain (FDTD) methods suggest that surface-structured light-emitting diodes (LEDs) with a subwavelength aluminum-nitride coating will have an enhanced light extraction efficiency. The use of such a LED structure will reduce both the internal reflection and the impedance mismatch, leading to a 3.2-fold enhancement in the light extraction efficiency compared to that for bare planar LEDs. We also present an improved method of modeling the light emission from the LED’s active layers to numerically calculate the light extraction efficiency of LEDs.

KW - Anti-reflection coatings

KW - Light-emitting diodes

KW - Total internal reflection

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JF - Journal of the Korean Physical Society

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Light extraction efficiency enhancement using surface-structured light-emitting diodes with a subwavelength coating

Abstract

Keywords

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