Thermal conductance imaging of graphene contacts

被引：83

作者：

Yang, Jia ^{[1
]}

Ziade, Elbara ^{[1
]}

Maragliano, Carlo ^{[2
]}

Crowder, Robert ^{[1
]}

Wang, Xuanye ^{[3
]}

Stefancich, Marco ^{[2
]}

Chiesa, Matteo ^{[2
]}

Swan, Anna K. ^{[3
]}

Schmidt, Aaron J. ^{[1
]}

机构：

[1] Boston Univ, Dept Mech Engn, Boston, MA 02215 USA

[2] Masdar Inst Sci & Technol, Inst Ctr Energy, Abu Dhabi, U Arab Emirates

[3] Boston Univ, Dept Elect & Comp Engn, Boston, MA 02215 USA

来源：

JOURNAL OF APPLIED PHYSICS | 2014年 / 116卷 / 02期

关键词：

TRANSPORT; CONDUCTIVITY; SCATTERING; FILMS;

D O I：

10.1063/1.4889928

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Suspended graphene has the highest measured thermal conductivity of any material at room temperature. However, when graphene is supported by a substrate or encased between two materials, basal-plane heat transfer is suppressed by phonon interactions at the interfaces. We have used frequency domain thermoreflectance to create thermal conductance maps of graphene contacts, obtaining simultaneous measurements of the basal-plane thermal conductivity and cross-plane thermal boundary conductance for 1-7 graphitic layers encased between titanium and silicon dioxide. We find that the basal-plane thermal conductivity is similar to that of graphene supported on silicon dioxide. Our results have implications for heat transfer in two-dimensional material systems, and are relevant for applications such as graphene transistors and other nanoelectronic devices. (C) 2014 AIP Publishing LLC.

引用

页数：9

共 31 条

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