High thermal conductivity of suspended few-layer hexagonal boron nitride sheets

Haiqing Zhou, Jixin Zhu, Zheng Liu, Zheng Yan, Xiujun Fan, Jian Lin, Gunuk Wang, Qingyu Yan, Ting Yu, Pulickel M. Ajayan, James M. Tour

Research output: Contribution to journalArticlepeer-review

199 Citations (Scopus)


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.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1232-1240
Number of pages9
JournalNano Research
Issue number8
Publication statusPublished - 2014 Aug 1
Externally publishedYes

Bibliographical note

Funding Information:
Dr. Haiqing Zhou and Dr. Jixin Zhu contributed equally to this work. This project was supported by the Singapore National Research Foundation under NRF RF Award No. NRF-RF2010-07, the AFOSR MURI (FA9550-12-1-0035), Air Force Office of Scientific Research (FA9550-09-1-0581), U.S. Army Research Office MURI grant W911NF-11-1-0362 and the U.S. Office of Naval Research MURI grant N000014-09- 1-1066.

Publisher Copyright:
© 2014, Tsinghua University Press and Springer-Verlag Berlin Heidelberg.


  • Raman spectroscopy
  • hexagonal boron nitride (h-BN)
  • thermal conductivity
  • two-dimensional

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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