High thermal conductivity in cubic boron arsenide crystals

Sheng Li, Qiye Zheng, Yinchuan Lv, Xiaoyuan Liu, Xiqu Wang, Pinshane 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., ... 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; 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, P, 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 P 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 ; 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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