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Bo W, Zou Y, Wang J. Novel electrical properties and applications in kaleidoscopic graphene nanoribbons. RSC Adv 2021; 11:33675-33691. [PMID: 35497508 PMCID: PMC9042372 DOI: 10.1039/d1ra05902e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2021] [Accepted: 09/30/2021] [Indexed: 01/25/2023] Open
Abstract
As one of the representatives of nano-graphene materials, graphene nanoribbons (GNRs) have more novel electrical properties, highly adjustable electronic properties, and optoelectronic properties than graphene due to their diverse geometric structures and atomic precision configurations. The electrical properties and band gaps of GNRs depend on their width, length, boundary configuration and other elemental doping, etc. With the improvement of the preparation technology and level of GNRs with atomic precision, increasing number of GNRs with different configurations are being prepared. They all show novel electrical properties and high tunability, which provides a broad prospect for the application of GNRs in the field of microelectronics. Here, we summarize the latest GNR-based achievements in recent years and summarize the latest electrical properties and potential applications of GNRs.
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Affiliation(s)
- Wenjing Bo
- College of Science, Liaoning Petrochemical University Fushun 113001 China
| | - Yi Zou
- College of Science, Liaoning Petrochemical University Fushun 113001 China
| | - Jingang Wang
- College of Science, Liaoning Petrochemical University Fushun 113001 China
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Fischer MM, de Sousa LE, Luiz E Castro L, Ribeiro LA, de Sousa RT, Magela E Silva G, de Oliveira Neto PH. Effective Mass of Quasiparticles in Armchair Graphene Nanoribbons. Sci Rep 2019; 9:17990. [PMID: 31784579 PMCID: PMC6884564 DOI: 10.1038/s41598-019-54319-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 10/10/2019] [Indexed: 11/08/2022] Open
Abstract
Armchair graphene nanoribbons (AGNRs) may present intrinsic semiconducting bandgaps, being of potential interest in developing new organic-based optoelectronic devices. The induction of a bandgap in AGNRs results from quantum confinement effects, which reduce charge mobility. In this sense, quasiparticles' effective mass becomes relevant for the understanding of charge transport in these systems. In the present work, we theoretically investigate the drift of different quasiparticle species in AGNRs employing a 2D generalization of the Su-Schrieffer-Heeger Hamiltonian. Remarkably, our findings reveal that the effective mass strongly depends on the nanoribbon width and its value can reach 60 times the mass of one electron for narrow lattices. Such underlying property for quasiparticles, within the framework of gap tuning engineering in AGNRs, impact the design of their electronic devices.
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Affiliation(s)
| | | | | | - Luiz Antonio Ribeiro
- Institute of Physics, University of Brasilia, 70.919-970, Brasilia, Brazil.
- University of Brasília, PPG-CIMA, Campus Planaltina, 73345-010, Brasília, DF, Brazil.
| | - Rafael Timóteo de Sousa
- Department of Electrical Engineering, University of Brasília, CP04455, Brasília, 70919-970, Brazil
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Abreu AVP, Ribeiro Junior LA, Silva GG, Pereira Junior ML, Enders BG, Fonseca ALA, e Silva GM. Stability conditions of armchair graphene nanoribbon bipolarons. J Mol Model 2019; 25:245. [DOI: 10.1007/s00894-019-4107-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2019] [Accepted: 06/26/2019] [Indexed: 10/26/2022]
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Silva GG, Ribeiro Junior LA, Pereira Junior ML, Fonseca ALDA, de Sousa Júnior RT, Silva GME. Bipolaron Dynamics in Graphene Nanoribbons. Sci Rep 2019; 9:2909. [PMID: 30814607 PMCID: PMC6393677 DOI: 10.1038/s41598-019-39774-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Accepted: 01/28/2019] [Indexed: 11/18/2022] Open
Abstract
Graphene nanoribbons (GNRs) are two-dimensional structures with a rich variety of electronic properties that derive from their semiconducting band gaps. In these materials, charge transport can occur via a hopping process mediated by carriers formed by self-interacting states between the excess charge and local lattice deformations. Here, we use a two-dimensional tight-binding approach to reveal the formation of bipolarons in GNRs. Our results show that the formed bipolarons are dynamically stable even for high electric field strengths when it comes to GNRs. Remarkably, the bipolaron dynamics can occur in acoustic and optical regimes concerning its saturation velocity. The phase transition between these two regimes takes place for a critical field strength in which the bipolaron moves roughly with the speed of sound in the material.
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Affiliation(s)
- Gesiel Gomes Silva
- Goiás Federal Institute of Education, Science and Technology, Luziania, Goias, 72.811-580, Brazil
| | - Luiz Antonio Ribeiro Junior
- Department of Physics, Chemistry and Biology (IFM), Linköping University, SE-581 83, Linkoping, Sweden.
- International Center for Condensed Matter Physics, University of Brasília, P.O. Box 04513, 70910-900, Brasília, Brazil.
- University of Brasília, PPG-CIMA, Campus Planaltina, 73345-010, Brasília, DF, Brazil.
| | | | - Antonio Luciano de Almeida Fonseca
- International Center for Condensed Matter Physics, University of Brasília, P.O. Box 04513, 70910-900, Brasília, Brazil
- University of Brasília, PPG-CIMA, Campus Planaltina, 73345-010, Brasília, DF, Brazil
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