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arXiv · 1606.08186

Superior thermal conductivity in suspended bilayer hexagonal boron nitride

Chengru Wang·Jie Guo·Lan Dong·Adili Aiyiti·Xiangfan Xu·Baowen Li
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Abstract

We reported the basal-plane thermal conductivity in exfoliated bilayer hexagonal boron nitride h-BN that was measured using suspended prepatterned microstructures. The h-BN sample suitable for thermal measurements was fabricated by dry-transfer method, whose sample quality, due to less polymer residues on surfaces, is believed to be superior to that of PMMA-mediated samples. The measured room temperature thermal conductivity is around 484 Wm-1K-1(+141 Wm-1K-1/ -24 Wm-1K-1) which exceeds that in bulk h-BN, providing experimental observation of the thickness-dependent thermal conductivity in suspended few-layer h-BN.

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Chengru Wang, Jie Guo, Lan Dong, Adili Aiyiti, Xiangfan Xu, Baowen Li. 2016-06-27. Superior thermal conductivity in suspended bilayer hexagonal boron nitride. https://doi.org/10.1038/srep25334

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