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Different from hexagonal boron nitride (hBN) sheets, the bandgap of hBN nanoribbons (BNNRs) can be changed by spatial/electrostatic confinement. It is predicted that a transverse electric field can narrow the bandgap and even cause an insulator–metal transition in BNNRs. However, experimentally introducing an overhigh electric field across the BNNR remains challenging. Here, it is theoretically and...
Bandgap Modulation
In article number 2303198, Weida Hu, Zhuhua Zhang, Haomin Wang, and co‐workers report effective bandgap modulation in zigzag‐oriented hexagonal boron nitride nanoribbons (zBNNRs) via water adsorption. The water layer adsorbed along the edges is believed to create a huge transverse potential and then greatly reduces the bandgap. The conductance of ≈8 nm‐wide zBNNRs can be tuned over...
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