High thermal conductivity in cubic boron arsenide crystals

Sheng Li, Qiye Zheng, Yinchuan Lv, Xiaoyuan Liu, Xiqu Wang, Pinshane Y. Huang, David G. Cahill, Bing Lv

Research output: Contribution to journalArticle

Abstract

The high density of heat generated in power electronics and optoelectronic devices is a critical bottleneck in their application. New materials with high thermal conductivity are needed to effectively dissipate heat and thereby enable enhanced performance of power controls, solid-state lighting, communication, and security systems. We report the experimental discovery of high thermal conductivity at room temperature in cubic boron arsenide (BAs) grown through a modified chemical vapor transport technique. The thermal conductivity of BAs, 1000 ± 90 watts per meter per kelvin meter-kelvin, is higher than that of silicon carbide by a factor of 3 and is surpassed only by diamond and the basal-plane value of graphite. This work shows that BAs represents a class of ultrahigh–thermal conductivity materials predicted by a recent theory, and that it may constitute a useful thermal management material for high–power density electronic devices.

Original languageEnglish (US)
Pages (from-to)579-581
Number of pages3
JournalScience
Volume361
Issue number6402
DOIs
StatePublished - Aug 10 2018

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boron
thermal conductivity
crystals
heat
optoelectronic devices
electronics
silicon carbides
illuminating
telecommunication
graphite
diamonds
vapors
solid state
conductivity
room temperature

ASJC Scopus subject areas

  • General

Cite this

Li, S., Zheng, Q., Lv, Y., Liu, X., Wang, X., Huang, P. Y., ... Lv, B. (2018). High thermal conductivity in cubic boron arsenide crystals. Science, 361(6402), 579-581. https://doi.org/10.1126/science.aat8982

High thermal conductivity in cubic boron arsenide crystals. / Li, Sheng; Zheng, Qiye; Lv, Yinchuan; Liu, Xiaoyuan; Wang, Xiqu; Huang, Pinshane Y.; Cahill, David G.; Lv, Bing.

In: Science, Vol. 361, No. 6402, 10.08.2018, p. 579-581.

Research output: Contribution to journalArticle

Li, S, Zheng, Q, Lv, Y, Liu, X, Wang, X, Huang, PY, Cahill, DG & Lv, B 2018, 'High thermal conductivity in cubic boron arsenide crystals', Science, vol. 361, no. 6402, pp. 579-581. https://doi.org/10.1126/science.aat8982
Li S, Zheng Q, Lv Y, Liu X, Wang X, Huang PY et al. High thermal conductivity in cubic boron arsenide crystals. Science. 2018 Aug 10;361(6402):579-581. https://doi.org/10.1126/science.aat8982
Li, Sheng ; Zheng, Qiye ; Lv, Yinchuan ; Liu, Xiaoyuan ; Wang, Xiqu ; Huang, Pinshane Y. ; Cahill, David G. ; Lv, Bing. / High thermal conductivity in cubic boron arsenide crystals. In: Science. 2018 ; Vol. 361, No. 6402. pp. 579-581.
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