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 journalArticle

109 Citations (Scopus)

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.[Figure not available: see fulltext.]

Original languageEnglish
Pages (from-to)1232-1240
Number of pages9
JournalNano Research
Volume7
Issue number8
DOIs
Publication statusPublished - 2014 Aug 1
Externally publishedYes

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Electrical and Electronic Engineering

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  • Cite this

    Zhou, H., Zhu, J., Liu, Z., Yan, Z., Fan, X., Lin, J., Wang, G., Yan, Q., Yu, T., Ajayan, P. M., & Tour, J. M. (2014). High thermal conductivity of suspended few-layer hexagonal boron nitride sheets. Nano Research, 7(8), 1232-1240. https://doi.org/10.1007/s12274-014-0486-z