Article Title
High thermal conductivity of suspended few-layer hexagonal boron nitride sheets
Authors
Haiqing Zhou, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Jixin Zhu, Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA
School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
Zheng Liu, School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
Zheng Yan, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Xiujun Fan, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
College of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124, China
Jian Lin, Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA
The Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Gunuk Wang, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Qingyu Yan, School of Materials Science and Engineering, Nanyang Technological University, Nanyang Avenue, 639798, Singapore
Ting Yu, Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University, 637371, Singapore
Pulickel M. Ajayan, Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA
The Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA
James M. Tour, Department of Chemistry, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Department of Materials Science and NanoEngineering, Rice University, 6100 Main Street, Houston, Texas 77005, USA
The Smalley Institute for Nanoscale Science and Technology, Rice University, 6100 Main Street, Houston, Texas 77005, USA
Keywords
two-dimensional, hexagonal boron nitride (h-BN), thermal conductivity, Raman spectroscopy
Abstract
The thermal conduction of suspended few-layer hexagonal boron nitride (h-BN) sheets was experimentally investigated using a noncontact micro-Raman spectroscopy method. The first-order temperature coefficients for monolayer (1L), bilayer (2L) and nine-layer (9L) h-BN sheets were measured to be –(3.41 ± 0.12) × 10–2, –(3.15 ± 0.14) × 10–2 and –(3.78 ± 0.16) × 10–2 cm–1·K–1, respectively. The room-temperature thermal conductivity of few-layer h-BN sheets was found to be in the range from 227 to 280 W·m–1·K–1, which is comparable to that of bulk h-BN, indicating their potential use as important components to solve heat dissipation problems in thermal management configurations.
Graphical Abstract
Publisher
Tsinghua University Press
Recommended Citation
Haiqing Zhou,Jixin Zhu,Zheng Liu,Zheng Yan,Xiujun Fan,Jian Lin,Gunuk Wang,Qingyu Yan,Ting Yu,Pulickel M. Ajayan,James M. Tour, High thermal conductivity of suspended few-layer hexagonal boron nitride sheets. NanoRes.2014, 7(8): 1232–1240
