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

Nano Research ◽  
2021 ◽  
Author(s):  
Shijie Sun ◽  
Yurou Guan ◽  
Zhenliang Hao ◽  
Zilin Ruan ◽  
Hui Zhang ◽  
...  
Keyword(s):  
Energy Band ◽  
Graphene Nanoribbons ◽  
Band Engineering ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

scholarly journals THE EFFECT OF CRITICAL ELECTRIC FIELDS ON THE ELECTRONIC DISTRIBUTION OF BILAYER ARMCHAIR GRAPHENE NANORIBBONS

2021 ◽  
pp. 98-112
Author(s):  
Lam Thuy Duong Nguyen ◽  
Thi Kim Quyen Nguyen ◽  
Nguyen Huu Hanh Pham ◽  
Dang Khoa Le ◽  
Van Chinh Ngo ◽  
...  
Keyword(s):  
Electric Field ◽  
Electric Fields ◽  
Energy Band ◽  
Graphene Nanoribbons ◽  
Strong Impact ◽  
Parallel Electric Field ◽  
Electronic Distribution ◽  
Wide Range ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

We employed tight-binding calculations and Green’s function formalism to investigate the effect of applied electric fields on the energy band and electronic properties of bilayer armchair graphene nanoribbons (BL-AGNRs). The results show that the perpendicular electric field has a strong impact on modifying and controlling the bandgap of BL-AGNRs. At the critical values of this electric field, distortions of energy dispersion in subbands and the formation of new electronic excitation channels occur strongly. These originate from low-lying energies near the Fermi level and move away from the zero-point with the increment of the electric field. Phase transitions and structural changes clearly happen in these materials. The influence of the parallel electric field is less important in changing the gap size, resulting in the absence of the critical voltage over a very wide range [–1.5 V; 1.5 V] for the semiconductor-insulator group. Nevertheless, it is interesting to note the powerful role of the parallel electric field in modifying the energy band and electronic distribution at each energy level. These results contribute to an overall picture of the physics model and electronic structure of BL-AGNRs under stimuli, which can be a pathway to real applications in the future, particularly for electronic devices.

Understanding the electrochemistry of armchair graphene nanoribbons containing nitrogen and oxygen functional groups: DFT calculations

2020 ◽  
Vol 22 (8) ◽  
pp. 4533-4543 ◽  
Author(s):  
Florentino López-Urías ◽  
Juan L. Fajardo-Díaz ◽  
Alejandro J. Cortés-López ◽  
Cristina L. Rodríguez-Corvera ◽  
Luis E. Jiménez-Ramírez ◽  
...  
Keyword(s):  
Band Structure ◽  
Dft Calculations ◽  
Structure Formation ◽  
Energy Band ◽  
Formation Energy ◽  
Graphene Nanoribbons ◽  
Band Gaps ◽  
Electronic Charge ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

Results are shown for the band structure, formation energy, band gaps, oxidation and reduction energies, electronic charge deficit, and global hydrophilicity index.

Family-dependent magnetism in atomic boron adsorbed armchair graphene nanoribbons

2019 ◽  
Vol 7 (21) ◽  
pp. 6241-6245 ◽  
Author(s):  
Wei-Wei Yan ◽  
Xiao-Fei Li ◽  
Xiang-Hua Zhang ◽  
Xinrui Cao ◽  
Mingsen Deng
Keyword(s):  
Fermi Level ◽  
Graphene Nanoribbons ◽  
Spin Splitting ◽  
Localized State ◽  
The Family ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene ◽  
Boron Adsorption

Boron adsorption induces a heavily localized state right at the Fermi level only in the family of W = 3p + 1 and thus spin-splitting occurs spontaneously.

Oxygen-promoted synthesis of armchair graphene nanoribbons on Cu(111)

2021 ◽  
Author(s):  
Penghui Ji ◽  
Oliver MacLean ◽  
Gianluca Galeotti ◽  
Dominik Dettmann ◽  
Giulia Berti ◽  
...  
Keyword(s):  
Graphene Nanoribbons ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene

scholarly journals Intrinsic properties of bipolarons in armchair graphene nanoribbons

2021 ◽  
Vol 769 ◽  
pp. 138387
Author(s):  
Gesiel G. Silva ◽  
Wiliam F. da Cunha ◽  
Marcelo L. Pereira Júnior ◽  
Luiz F. Roncaratti ◽  
Luiz A. Ribeiro
Keyword(s):  
Graphene Nanoribbons ◽  
Intrinsic Properties ◽  
Armchair Graphene Nanoribbons ◽  
Armchair Graphene
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