Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals

Chung Hsiang Lin; Jui Yen Tsai; Chih Chiang Kao; Hao Chung Kuo; C. C. Yu; J. R. LoJun-Ren; Kok Ming Leung

doi:10.1143/JJAP.45.1591

Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals

Chung Hsiang Lin, Jui Yen Tsai, Chih Chiang Kao, Hao Chung Kuo, C. C. Yu, J. R. LoJun-Ren, Kok Ming Leung

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

Abstract

We have successfully designed and fabricated GaN-based light-emitting diodes (LEDs) containing an omnidirectional one-dimensional photonic crystal (1D PC). The ID PC is composed of alternatively stacked TiO₂ and SiO₂ layers designed to possess a photonic band gap (PBG) within the blue regime of interest. With the same multiple quantum well (MQW) emission peak at approximately 450 nm and a driving current of 20 mA, the light output powers of the LED with and without the 1D PC are approximately 11.7 and 6.5 mW, respectively. The enhancement in light extraction of our LED with ID PC demonstrates that a properly designed omnidirectional ID PC can have a higher reflectance and a wider reflection angle than a conventional distributed Bragg reflector (DBR). Our work shows promising potential for the enhancement of output powers of commercial light emitting devices.

Original language	English (US)
Pages (from-to)	1591-1593
Number of pages	3
Journal	Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers
Volume	45
Issue number	3 A
DOIs	https://doi.org/10.1143/JJAP.45.1591
State	Published - Mar 8 2006

Keywords

GaN
Light-emitting diode
Omnidirectional reflector
Photonic crystal

ASJC Scopus subject areas

General Engineering
General Physics and Astronomy

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10.1143/JJAP.45.1591

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Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals. / Lin, Chung Hsiang; Tsai, Jui Yen; Kao, Chih Chiang et al.
In: Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers, Vol. 45, No. 3 A, 08.03.2006, p. 1591-1593.

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

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title = "Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals",

abstract = "We have successfully designed and fabricated GaN-based light-emitting diodes (LEDs) containing an omnidirectional one-dimensional photonic crystal (1D PC). The ID PC is composed of alternatively stacked TiO2 and SiO2 layers designed to possess a photonic band gap (PBG) within the blue regime of interest. With the same multiple quantum well (MQW) emission peak at approximately 450 nm and a driving current of 20 mA, the light output powers of the LED with and without the 1D PC are approximately 11.7 and 6.5 mW, respectively. The enhancement in light extraction of our LED with ID PC demonstrates that a properly designed omnidirectional ID PC can have a higher reflectance and a wider reflection angle than a conventional distributed Bragg reflector (DBR). Our work shows promising potential for the enhancement of output powers of commercial light emitting devices.",

keywords = "GaN, Light-emitting diode, Omnidirectional reflector, Photonic crystal",

author = "Lin, {Chung Hsiang} and Tsai, {Jui Yen} and Kao, {Chih Chiang} and Kuo, {Hao Chung} and Yu, {C. C.} and LoJun-Ren, {J. R.} and Leung, {Kok Ming}",

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T1 - Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals

AU - Lin, Chung Hsiang

AU - Tsai, Jui Yen

AU - Kao, Chih Chiang

AU - Kuo, Hao Chung

AU - Yu, C. C.

AU - LoJun-Ren, J. R.

AU - Leung, Kok Ming

PY - 2006/3/8

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N2 - We have successfully designed and fabricated GaN-based light-emitting diodes (LEDs) containing an omnidirectional one-dimensional photonic crystal (1D PC). The ID PC is composed of alternatively stacked TiO2 and SiO2 layers designed to possess a photonic band gap (PBG) within the blue regime of interest. With the same multiple quantum well (MQW) emission peak at approximately 450 nm and a driving current of 20 mA, the light output powers of the LED with and without the 1D PC are approximately 11.7 and 6.5 mW, respectively. The enhancement in light extraction of our LED with ID PC demonstrates that a properly designed omnidirectional ID PC can have a higher reflectance and a wider reflection angle than a conventional distributed Bragg reflector (DBR). Our work shows promising potential for the enhancement of output powers of commercial light emitting devices.

AB - We have successfully designed and fabricated GaN-based light-emitting diodes (LEDs) containing an omnidirectional one-dimensional photonic crystal (1D PC). The ID PC is composed of alternatively stacked TiO2 and SiO2 layers designed to possess a photonic band gap (PBG) within the blue regime of interest. With the same multiple quantum well (MQW) emission peak at approximately 450 nm and a driving current of 20 mA, the light output powers of the LED with and without the 1D PC are approximately 11.7 and 6.5 mW, respectively. The enhancement in light extraction of our LED with ID PC demonstrates that a properly designed omnidirectional ID PC can have a higher reflectance and a wider reflection angle than a conventional distributed Bragg reflector (DBR). Our work shows promising potential for the enhancement of output powers of commercial light emitting devices.

KW - GaN

KW - Light-emitting diode

KW - Omnidirectional reflector

KW - Photonic crystal

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Enhanced light output in InGaN-based light-emitting diodes with omnidirectional one-dimensional photonic crystals

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Keywords

ASJC Scopus subject areas

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