Heat Dissipation in Flexible Nitride Nanowire Light-Emitting Diodes

被引：4

作者：

Guan, Nan ^{[1
]}

Amador-Mendez, Nuno ^{[1
]}

Kunti, Arup ^{[1
]}

Babichev, Andrey ^{[2
]}

Das, Subrata ^{[3
]}

Kapoor, Akanksha ^{[4
]}

Gogneau, Noelle ^{[1
]}

Eymery, Joel ^{[5
]}

Julien, Francois Henri ^{[1
]}

Durand, Christophe ^{[4
]}

Tchernycheva, Maria ^{[1
]}

机构：

[1] Univ Paris Saclay, CNRS, C2N, F-91120 Palaiseau, France

[2] ITMO Univ, St Petersburg 197101, Russia

[3] CSIR, Mat Sci & Technol Div, Natl Inst Interdisciplinary Sci & Technol, Thiruvananthapuram 695019, Kerala, India

[4] Univ Grenoble Alpes, CEA, IRIG, PHELIQS,NPSC, F-38000 Grenoble, France

[5] Univ Grenoble Alpes, CEA, IRIG, MEM,NRS, F-38000 Grenoble, France

来源：

NANOMATERIALS | 2020年 / 10卷 / 11期

基金：

欧洲研究理事会;

关键词：

nanowire; LED; InGaN; mechanical flexibility; self-heating; JUNCTION TEMPERATURE; LEDS;

D O I：

10.3390/nano10112271

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：1 / 10

页数：10

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