Journal
CHEMICAL PHYSICS
Volume 544, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.chemphys.2021.111116
Keywords
Chiral graphene nanoribbons; Doping; Edge/surface energy states; Electric field
Funding
- National Natural Science Foundation of China [11774178]
- Natural Science Foundation of Jiangsu Province [20KJA430004]
- Talent Young Scientist Program (TYSP)
- RCN CoE funding scheme [262633]
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In this study, the electro-optical properties of doped chiral graphene nanoribbons were investigated using first principles calculations. It was found that O-atoms on edges can enhance edge reconstruction and change the energy gap. Additionally, the introduction of an electric field can manipulate the electronic and optical energy gaps in these nanoribbons.
The electro-optical properties of doped chiral graphene nanoribbons are investigated using first principles calculations. O-atoms on edges enhance edge reconstruction with strong C=C bonds that increase the binding energy while at the surface they break some surface bonds and decreases the binding energy. The energy gap in the former increases to 2.08 eV due to the passivation of edge electrons, while in the latter it becomes 0.07 eV. Electric field provides additional manipulation, for instance Y-field produces oscillation/decrease of the electronic and optical energy gap between the edge/surface states in undoped/O-B-O doped chiral nanoribbons.
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