Bilayer Borophenes Exhibit Silicon‐Like Bandgap and Carrier Mobilities
Ying Xu,
Zhenxian Wang,
Xiaoyu Xuan
et al.
Abstract:Borophene, a boron analogue of graphene, is typically metallic, while all bulk boron phases are insulating. Here, we predict by first‐principles calculations that recently synthesized bilayer borophene, being suggested to be composed of two stacked v1/12 sheets, is a semiconductor with a bandgap of 1.13 eV, almost the same as that of silicon. It is shown that the stacking mode between two boron sheets as well as the density and pattern of the interlayer boron‐boron (B─B) bonds are the key factors for opening t… Show more
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