Temperature-dependent thermal properties of single-walled carbon nanotube thin films

被引：28

作者：

Duzynska, A. ^{[1
]}

Taube, A. ^{[1
,3
,4
]}

Korona, K. P. ^{[2
]}

Judek, J. ^{[1
]}

Zdrojek, M. ^{[1
]}

机构：

[1] Warsaw Univ Technol, Fac Phys, PL-00662 Warsaw, Poland

[2] Univ Warsaw, Fac Phys, PL-02093 Warsaw, Poland

[3] Inst Electr Mat Technol, Warsaw, Poland

[4] Warsaw Univ Technol, Inst Microelect & Optoelect, PL-00662 Warsaw, Poland

来源：

APPLIED PHYSICS LETTERS | 2015年 / 106卷 / 18期

关键词：

PHONON SHIFTS; CONDUCTIVITY; GRAPHENE; TRANSPARENT; MONOLAYER;

D O I：

10.1063/1.4919792

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We herein report the determination of the intrinsic thermal conductivity (kappa) and interfacial thermal conductance (g) of single-walled carbon nanotube thin films (50 nm) on top of a SiO2 substrate. The study was performed as a function of temperature (300-450 K) using the opto-thermal technique. The value of kappa decreases nonlinearly by approximately 60% from a value of 26 Wm(-1) K-1 at 300K to a value of 9 Wm(-1) K-1 at 450 K. This effect stems from the increase of multi-phonon scattering at higher temperatures. The g increases with temperature, reaching a saturation plateau at 410 K. These findings may contribute to a better understanding of the thermal properties of the supported carbon nanotube thin films, which are crucial for any heat dissipation applications. (c) 2015 AIP Publishing LLC.

引用

页数：5

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