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
收藏
页码：1 / 10
页数：10
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