Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers

Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers

The temperature-dependent optical, electrical, and thermal properties of flip-chip light emitting diodes (FCLEDs) with diamond-like carbon (DLC) heat-spreading layers were investigated. On the basis of the measured results in the 20°C to 100°C temperature range, a significant performance improvement...

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Main Authors: Pai-Yang Tsai, Hou-Kuei Huang, Chien-Min Sung, Ming-Chi Kan, Yeong-Her Wang
Format: Article
Language:English
Published: Hindawi Limited 2014-01-01
Series:International Journal of Photoenergy
Online Access:http://dx.doi.org/10.1155/2014/829284
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spelling doaj-2c01fd99fe0f49579d9399ba77af0da72020-11-24T20:53:05ZengHindawi LimitedInternational Journal of Photoenergy1110-662X1687-529X2014-01-01201410.1155/2014/829284829284Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading LayersPai-Yang Tsai0Hou-Kuei Huang1Chien-Min Sung2Ming-Chi Kan3Yeong-Her Wang4Institute of Microelectronics, Department of Electrical Engineering, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, TaiwanDepartment of DLC Technology, RiteDia, Hsin Chu 303, TaiwanDepartment of DLC Technology, RiteDia, Hsin Chu 303, TaiwanInstitute of Microelectronics, Department of Electrical Engineering, Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, TaiwanThe temperature-dependent optical, electrical, and thermal properties of flip-chip light emitting diodes (FCLEDs) with diamond-like carbon (DLC) heat-spreading layers were investigated. On the basis of the measured results in the 20°C to 100°C temperature range, a significant performance improvement can be achieved for FCLEDs with DLC heat-spreading layers (DLC-FCLED) compared with FCLEDs without DLC heat-spreading layers (non-DLC-FCLED). The external quantum efficiency (EQE) of the DLC-FCLED improves by 9% at an injection current of 1000 mA and a temperature of 100°C. The forward voltage and spectra variations are smaller than those of non-DLC-FCLEDs. The DLC-FCLED provides high efficiency and high stability performance for high-power and high-temperature applications.http://dx.doi.org/10.1155/2014/829284
collection DOAJ
language English
format Article
sources DOAJ
author Pai-Yang Tsai
Hou-Kuei Huang
Chien-Min Sung
Ming-Chi Kan
Yeong-Her Wang
spellingShingle Pai-Yang Tsai
Hou-Kuei Huang
Chien-Min Sung
Ming-Chi Kan
Yeong-Her Wang
Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
International Journal of Photoenergy
author_facet Pai-Yang Tsai
Hou-Kuei Huang
Chien-Min Sung
Ming-Chi Kan
Yeong-Her Wang
author_sort Pai-Yang Tsai
title Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
title_short Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
title_full Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
title_fullStr Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
title_full_unstemmed Thermal Characteristics of InGaN/GaN Flip-Chip Light Emitting Diodes with Diamond-Like Carbon Heat-Spreading Layers
title_sort thermal characteristics of ingan/gan flip-chip light emitting diodes with diamond-like carbon heat-spreading layers
publisher Hindawi Limited
series International Journal of Photoenergy
issn 1110-662X
1687-529X
publishDate 2014-01-01
description The temperature-dependent optical, electrical, and thermal properties of flip-chip light emitting diodes (FCLEDs) with diamond-like carbon (DLC) heat-spreading layers were investigated. On the basis of the measured results in the 20°C to 100°C temperature range, a significant performance improvement can be achieved for FCLEDs with DLC heat-spreading layers (DLC-FCLED) compared with FCLEDs without DLC heat-spreading layers (non-DLC-FCLED). The external quantum efficiency (EQE) of the DLC-FCLED improves by 9% at an injection current of 1000 mA and a temperature of 100°C. The forward voltage and spectra variations are smaller than those of non-DLC-FCLEDs. The DLC-FCLED provides high efficiency and high stability performance for high-power and high-temperature applications.
url http://dx.doi.org/10.1155/2014/829284
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AT houkueihuang thermalcharacteristicsofinganganflipchiplightemittingdiodeswithdiamondlikecarbonheatspreadinglayers
AT chienminsung thermalcharacteristicsofinganganflipchiplightemittingdiodeswithdiamondlikecarbonheatspreadinglayers
AT mingchikan thermalcharacteristicsofinganganflipchiplightemittingdiodeswithdiamondlikecarbonheatspreadinglayers
AT yeongherwang thermalcharacteristicsofinganganflipchiplightemittingdiodeswithdiamondlikecarbonheatspreadinglayers
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