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journal article·2016-12-01Open access

Layers dependent dielectric properties of two dimensional hexagonal boron nitridenanosheets

Liang Wang, Yayun Pu, Ai Kah Soh, Yuping Shi, Shuangyi Liu

AIP Advances· Volume 6· Issue 12
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Source abstract

Abstract

Two dimensional (2D) boron nitride (h-BN) nanosheets are well known as their tunable electric properties and well compatible with graphene. Studying the dielectric properties carefully is essential for their promised applications. Most previous first principle studies treated 2D h-BN as a strict 2D system, where the contribution of ion polarization is neglected. The results show obvious deviation from experimental values, and the situations are worse with the stacking layer increasing. Thus, in present works, the dielectric properties of 2D h-BN nanosheets are studied with involving the ion contributions appropriately. The evolution of dielectric performance with stacking layers varying is also studied. Obvious layer dependent anisotropic dielectric properties are predicted, which reaches the bulk h-BN level as the thickness approaching 5.8nm (20L). There should be a balance between dielectric properties and the thickness (stacking layers) for the dielectric applications of 2D h-BN nanosheets.
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Research context

Nanomaterials

OpenAlex topics: Graphene research and applications · Boron and Carbon Nanomaterials Research · 2D Materials and Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Chinese Academy of Sciences 1 Chongqing Institute of Green and Intelligent Technology, , 266 Fangzheng Ave., ShuiTu Technology Development Zone, Beibei District, Chongqing, People’s Republic of China

Chinese Academy of Sciences 2 Chongqing Key Laboratory of Multi-Scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, , Chongqing 400714, People’s Republic of China

Monash University Malaysia 3 School of Engineering, , Bandar Sunway, Selangor, Malaysia

The Hong Kong University of Science and Technology 4 Department of Mechanical and Aerospace Engineering, , Hong Kong

Funding

National Natural Science Foundation of China-GuangDong Government Unit Foundation · Chinese Academy of Sciences · Chongqing Science and Technology Commission

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