Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes

Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes

We analyze the thermal behavior of a flexible nanowire (NW) light-emitting diode (LED) operated under different injection conditions. The LED is based on metal–organic vapor-phase deposition (MOCVD)-grown self-assembled InGaN/GaN NWs in a polydimethylsiloxane (PDMS) matrix. Despite the poor thermal...

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Main Authors: Nan Guan, Nuño Amador-Mendez, Arup Kunti, Andrey Babichev, Subrata Das, Akanksha Kapoor, Noëlle Gogneau, Joël Eymery, François Henri Julien, Christophe Durand, Maria Tchernycheva
Format: Article
Language:English
Published: MDPI AG 2020-11-01
Series:Nanomaterials
Subjects:
nanowire
LED
InGaN
mechanical flexibility
self-heating
Online Access:https://www.mdpi.com/2079-4991/10/11/2271
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spelling doaj-b6c0221a11204181a0b1b21f43920a3d2020-11-25T04:08:23ZengMDPI AGNanomaterials2079-49912020-11-01102271227110.3390/nano10112271Heat Dissipation in Flexible Nitride Nanowire Light-Emitting DiodesNan Guan0Nuño Amador-Mendez1Arup Kunti2Andrey Babichev3Subrata Das4Akanksha Kapoor5Noëlle Gogneau6Joël Eymery7François Henri Julien8Christophe Durand9Maria Tchernycheva10C2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceC2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceC2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceITMO University, 197101 Saint Petersburg, RussiaMaterials Science and Technology Division, CSIR-National Institute for Interdisciplinary Science and Technology, Thiruvananthapuram, Kerala 695019, IndiaUniv. Grenoble Alpes, CEA, IRIG, PHELIQS, NPSC, 38000 Grenoble, FranceC2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceUniv. Grenoble Alpes, CEA, IRIG, MEM, NRS, 38000 Grenoble, FranceC2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceUniv. Grenoble Alpes, CEA, IRIG, PHELIQS, NPSC, 38000 Grenoble, FranceC2N-CNRS, Université Paris Saclay, 91120 Palaiseau, FranceWe analyze the thermal behavior of a flexible nanowire (NW) light-emitting diode (LED) operated under different injection conditions. The LED is based on metal–organic vapor-phase deposition (MOCVD)-grown self-assembled InGaN/GaN NWs in a polydimethylsiloxane (PDMS) matrix. Despite the poor thermal conductivity of the polymer, active nitride NWs effectively dissipate heat to the substrate. Therefore, the flexible LED mounted on a copper heat sink can operate under high injection without significant overheating, while the device mounted on a plastic holder showed a 25% higher temperature for the same injected current. The efficiency of the heat dissipation by nitride NWs was further confirmed with finite-element modeling of the temperature distribution in a NW/polymer composite membrane.https://www.mdpi.com/2079-4991/10/11/2271nanowireLEDInGaNmechanical flexibilityself-heating
collection DOAJ
language English
format Article
sources DOAJ
author Nan Guan
Nuño Amador-Mendez
Arup Kunti
Andrey Babichev
Subrata Das
Akanksha Kapoor
Noëlle Gogneau
Joël Eymery
François Henri Julien
Christophe Durand
Maria Tchernycheva
spellingShingle Nan Guan
Nuño Amador-Mendez
Arup Kunti
Andrey Babichev
Subrata Das
Akanksha Kapoor
Noëlle Gogneau
Joël Eymery
François Henri Julien
Christophe Durand
Maria Tchernycheva
Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
Nanomaterials
nanowire
LED
InGaN
mechanical flexibility
self-heating
author_facet Nan Guan
Nuño Amador-Mendez
Arup Kunti
Andrey Babichev
Subrata Das
Akanksha Kapoor
Noëlle Gogneau
Joël Eymery
François Henri Julien
Christophe Durand
Maria Tchernycheva
author_sort Nan Guan
title Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
title_short Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
title_full Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
title_fullStr Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
title_full_unstemmed Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes
title_sort heat dissipation in flexible nitride nanowire light-emitting diodes
publisher MDPI AG
series Nanomaterials
issn 2079-4991
publishDate 2020-11-01
description We analyze the thermal behavior of a flexible nanowire (NW) light-emitting diode (LED) operated under different injection conditions. The LED is based on metal–organic vapor-phase deposition (MOCVD)-grown self-assembled InGaN/GaN NWs in a polydimethylsiloxane (PDMS) matrix. Despite the poor thermal conductivity of the polymer, active nitride NWs effectively dissipate heat to the substrate. Therefore, the flexible LED mounted on a copper heat sink can operate under high injection without significant overheating, while the device mounted on a plastic holder showed a 25% higher temperature for the same injected current. The efficiency of the heat dissipation by nitride NWs was further confirmed with finite-element modeling of the temperature distribution in a NW/polymer composite membrane.
topic nanowire
LED
InGaN
mechanical flexibility
self-heating
url https://www.mdpi.com/2079-4991/10/11/2271
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