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One-dimensional hexagonal boron nitride conducting channel

Sources:nanopure | Release date: 2020-06-13 | Browsing volume:
Key words:One-dimensional hexagonal boron nitride conducting channel


Hexagonal boron nitride (hBN) is an insulating two-dimensional (2D) material with a large bandgap. Although known for its interfacing with other 2D materials and structural similarities to graphene, the potential use of hBN in 2D electronics is limited by its insulating nature. Here, we report atomically sharp twin boundaries at AA′/AB stacking boundaries in chemical vapor deposition–synthesized few-layer hBN. We find that the twin boundary is composed of a 6′6′ configuration, showing conducting feature with a zero bandgap. Furthermore, the formation mechanism of the atomically sharp twin boundaries is suggested by an analogy with stacking combinations of AA′/AB based on the observations of extended Klein edges at the layer boundaries of AB-stacked hBN. The atomically sharp AA′/AB stacking boundary is promising as an ultimate 1D electron channel embedded in insulating pristine hBN. This study will provide insights into the fabrication of single-hBN electronic devices.

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Suzhou Nutpool Materials Technology Co., Ltd., established in 2016, is located in the national high-tech development zone Changshu Economic and Technological Development Zone, and has got funded by Jiangsu Province, Suzhou and Changshu government to scale-up the production of ultra-fine specialty ceramic powders with high-purity.