Journal
EPL
Volume 127, Issue 6, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1209/0295-5075/127/67003
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Funding
- Foundation of Lanzhou Institute of Chemical Physics
- National Natural Science Foundation of China [51875550, 51872166]
- Youth Innovation Promotion Association [2017459]
- Key Research and Development Program of Shandong Province, China [2019GGX102064]
- Fundamental Research Fund of Shandong University, China [2017JC032]
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Two-dimensional hexagonal boron nitride nanosheets (h-BNNSs) have a wide band-gap of over 6.0 eV, which makes them pervious to visible light. In the current report, based on first-principles calculations, we demonstrate that h-BNNS bi-layers can be converted to visible light absorption materials through band-gap tuning carried out by fluorine (F) doping. Bi-layer structures with different F doping ratios can be formed via van der Waals interaction, whose band-gaps are greatly reduced comparing with those of pure h-BNNS bi-layers and isolated h-BN mono-layers. Furthermore, the optical absorption of F-doped h-BNNS bi-layers is observably enhanced in the ultraviolet-visible light range, which makes F-doped h-BNNS bi-layers potential metal-free visible-light?driven photo-catalyst for water splitting. Copyright (C) EPLA, 2019
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