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Nano Research 2022, 15(1): 653-658 https://doi.org/10.1007/s12274-021-3539-0
Research Article | Issue | Published: 09 July 2021

Energy band engineering via "Bite" defect located on N = 8 armchair graphene nanoribbons

Show Author's Information Shijie Sun1,  Yurou Guan1,  Zhenliang Hao1,  Zilin Ruan1,  Hui Zhang1,  Jianchen Lu1,  Lei Gao2,  Xiaoqing Zuo1,  Jinming Cai1( )
Faculty of Materials Science and Engineering,Kunming University of Science and Technology,Kunming,650000,China;
Faculty of Science,Kunming University of Science and Technology,Kunming,650000,China;
Keywords:
density functional theory (DFT), graphene nanoribbons (GNRs), scanning tunneling spectroscopy (STS), non-contact atomic force microscopy (NC-AFM), energy band regulation
Topics:
Atomic force microscopy
Cite this article:
Sun S, Guan Y, Hao Z, et al. Energy band engineering via "Bite" defect located on N = 8 armchair graphene nanoribbons. Nano Research, 2022, 15(1): 653-658. https://doi.org/10.1007/s12274-021-3539-0
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Abstract Electronic supplementary material About this article

Graphene nanoribbons (GNRs) not only share many superlative properties of graphene but also display an exceptional degree of tunability of their electronic properties. The bandgaps of GNRs depend greatly on their widths, edges, etc. Herein, we report the synthesis path and the physical properties of atomic accuracy staggered narrow N = 8 armchair graphene nanoribbons (sn-8AGNR) with alternating "Bite" defects on the opposite side. The intermediate structures in the surface physicochemical reactions from the precursors to the sn-8AGNR are characterized by scanning tunneling microscopy. The electronic properties of the sn-8AGNR are characterized by scanning tunneling spectroscopies and dI/dV mappings. Compared with the perfect N = 8 armchair graphene nanoribbons (8AGNR), the sn-8AGNR has a larger bandgap, indicating that the "Bite" edges can effectively regulate the electronic structures of GNRs.

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Acknowledgements

Publication history

Received: 01 January 2021
Revised: 13 April 2021
Accepted: 26 April 2021
Published: 09 July 2021
Issue date: January 2022

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2021

Acknowledgements

Acknowledgements

We are grateful for the support by the National Natural Science Foundation of China (Nos. 11674136, 61901200, 51662023, and 51861020), The National Recruitment Program for Young Professionals (No. 1097816002), Yunnan Province for Recruiting High-Caliber Technological Talents (No. 1097816002), reserve talents for Yunnan young and middle aged academic and technical leaders (No. 2017HB010), the Yunnan Province Science and Technology Plan Project (No. 2019FD041).Strategic Priority Research Program of Chinese Academy of Sciences (No. XDB30010000).

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