Nitride-based LEDs with high-reflectance and wide-angle ag mirror+SiO 2/TiO2 DBR backside reflector

Nan Ming Lin; Shih Chang Shei; Shoou Jinn Chang

doi:10.1109/JLT.2011.2111416

Nitride-based LEDs with high-reflectance and wide-angle ag mirror+SiO ₂/TiO₂ DBR backside reflector

Nan Ming Lin
, Shih Chang Shei
, Shoou Jinn Chang

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

18 Citations (Scopus)

Abstract

Nitride-based light-emitting diodes (LEDs) with a backside reflector combining a SiO₂/TiO₂ distributed Bragg reflector (DBR) and an Ag mirror were simulated and fabricated. With combining the three-pair SiO₂/TiO₂ DBR and an Ag mirror, it was found that we can significantly enhance the 96% reflectance of Ag mirror to 99.1% with an incident angle of 0°. Furthermore, reflectance of the proposed reflector depends slightly on incident light wavelength and the incident angle. With 350-mA current injection, it was found that the output powers were 122, 138, 153, 156, and 162 mW for the LEDs without reflector, with an Al mirror, with Al+3DBR mirror, with an Ag mirror, and with Ag+3DBR mirror, respectively.

Original language	English
Article number	5708156
Pages (from-to)	1033-1038
Number of pages	6
Journal	Journal of Lightwave Technology
Volume	29
Issue number	7
DOIs	https://doi.org/10.1109/JLT.2011.2111416
Publication status	Published - 2011

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics

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10.1109/JLT.2011.2111416

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@article{d532c3a32b004897a3a8d9a9f88d31cd,

title = "Nitride-based LEDs with high-reflectance and wide-angle ag mirror+SiO 2/TiO2 DBR backside reflector",

abstract = "Nitride-based light-emitting diodes (LEDs) with a backside reflector combining a SiO2/TiO2 distributed Bragg reflector (DBR) and an Ag mirror were simulated and fabricated. With combining the three-pair SiO2/TiO2 DBR and an Ag mirror, it was found that we can significantly enhance the 96\% reflectance of Ag mirror to 99.1\% with an incident angle of 0°. Furthermore, reflectance of the proposed reflector depends slightly on incident light wavelength and the incident angle. With 350-mA current injection, it was found that the output powers were 122, 138, 153, 156, and 162 mW for the LEDs without reflector, with an Al mirror, with Al+3DBR mirror, with an Ag mirror, and with Ag+3DBR mirror, respectively.",

author = "Lin, \{Nan Ming\} and Shei, \{Shih Chang\} and Chang, \{Shoou Jinn\}",

note = "Funding Information: Manuscript received December 10, 2010; revised January 07, 2011; accepted January 27, 2011. Date of publication February 04, 2011; date of current version March 21, 2011. This work was supported in part by the Bureau of Energy, Ministry of Economic Affairs of R.O.C. under Contract 98-D0204-6 and in part by the LED Lighting and Research Center, National Cheng Kung University, Tainan Taiwan. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.",

year = "2011",

doi = "10.1109/JLT.2011.2111416",

language = "English",

volume = "29",

pages = "1033--1038",

journal = "Journal of Lightwave Technology",

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AU - Shei, Shih Chang

AU - Chang, Shoou Jinn

N1 - Funding Information: Manuscript received December 10, 2010; revised January 07, 2011; accepted January 27, 2011. Date of publication February 04, 2011; date of current version March 21, 2011. This work was supported in part by the Bureau of Energy, Ministry of Economic Affairs of R.O.C. under Contract 98-D0204-6 and in part by the LED Lighting and Research Center, National Cheng Kung University, Tainan Taiwan. Copyright: Copyright 2011 Elsevier B.V., All rights reserved.

PY - 2011

Y1 - 2011

N2 - Nitride-based light-emitting diodes (LEDs) with a backside reflector combining a SiO2/TiO2 distributed Bragg reflector (DBR) and an Ag mirror were simulated and fabricated. With combining the three-pair SiO2/TiO2 DBR and an Ag mirror, it was found that we can significantly enhance the 96% reflectance of Ag mirror to 99.1% with an incident angle of 0°. Furthermore, reflectance of the proposed reflector depends slightly on incident light wavelength and the incident angle. With 350-mA current injection, it was found that the output powers were 122, 138, 153, 156, and 162 mW for the LEDs without reflector, with an Al mirror, with Al+3DBR mirror, with an Ag mirror, and with Ag+3DBR mirror, respectively.

AB - Nitride-based light-emitting diodes (LEDs) with a backside reflector combining a SiO2/TiO2 distributed Bragg reflector (DBR) and an Ag mirror were simulated and fabricated. With combining the three-pair SiO2/TiO2 DBR and an Ag mirror, it was found that we can significantly enhance the 96% reflectance of Ag mirror to 99.1% with an incident angle of 0°. Furthermore, reflectance of the proposed reflector depends slightly on incident light wavelength and the incident angle. With 350-mA current injection, it was found that the output powers were 122, 138, 153, 156, and 162 mW for the LEDs without reflector, with an Al mirror, with Al+3DBR mirror, with an Ag mirror, and with Ag+3DBR mirror, respectively.

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Nitride-based LEDs with high-reflectance and wide-angle ag mirror+SiO ₂/TiO₂ DBR backside reflector

Abstract

All Science Journal Classification (ASJC) codes

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