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Unified bandgap engineering of graphene nanoribbons

Unified bandgap engineering, valid both for the armchair and zigzag graphene nanoribbons (GNRs), is enunciated. Using the boundary condition appropriate for K-K' points of the Dirac cones, GNRs are shown to exhibit three distinct semiconducting states SC0, SC1, and SC2 with complete absence of...

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主要な著者: Arora, Vijay K., Bhattacharyya, Arkaprava
フォーマット: 論文
出版事項: Wiley-VCH Verlag 2015
主題:
TK Electrical engineering. Electronics Nuclear engineering
オンライン･アクセス:http://eprints.utm.my/id/eprint/55944/
http://dx.doi.org/10.1002/pssb.201451005
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spelling my.utm.559442017-08-25T10:25:59Z http://eprints.utm.my/id/eprint/55944/ Unified bandgap engineering of graphene nanoribbons Arora, Vijay K. Bhattacharyya, Arkaprava TK Electrical engineering. Electronics Nuclear engineering Unified bandgap engineering, valid both for the armchair and zigzag graphene nanoribbons (GNRs), is enunciated. Using the boundary condition appropriate for K-K' points of the Dirac cones, GNRs are shown to exhibit three distinct semiconducting states SC0, SC1, and SC2 with complete absence of metallic state. The experimental bandgap for 7-AGNR and 13-AGNR armchair (A) is found to be in excellent agreement with SC1 state. Similar associations are pointed out for other configurations. Both the experimental data and theoretical results show bandgap and effective mass inversely proportional to the GNR width. The effective mass is directly proportional to the bandgap. The indexing scheme connects chiral index of carbon nanotubes (CNTs) to that used for GNR by making edge corrections for the dangling bonds. Wiley-VCH Verlag 2015-11-01 Article PeerReviewed Arora, Vijay K. and Bhattacharyya, Arkaprava (2015) Unified bandgap engineering of graphene nanoribbons. Physica Status Solidi (B) Basic Research, 251 (11). pp. 2257-2264. ISSN 0370-1972 http://dx.doi.org/10.1002/pssb.201451005 DOI:10.1002/pssb.201451005
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Arora, Vijay K.
Bhattacharyya, Arkaprava
Unified bandgap engineering of graphene nanoribbons
description Unified bandgap engineering, valid both for the armchair and zigzag graphene nanoribbons (GNRs), is enunciated. Using the boundary condition appropriate for K-K' points of the Dirac cones, GNRs are shown to exhibit three distinct semiconducting states SC0, SC1, and SC2 with complete absence of metallic state. The experimental bandgap for 7-AGNR and 13-AGNR armchair (A) is found to be in excellent agreement with SC1 state. Similar associations are pointed out for other configurations. Both the experimental data and theoretical results show bandgap and effective mass inversely proportional to the GNR width. The effective mass is directly proportional to the bandgap. The indexing scheme connects chiral index of carbon nanotubes (CNTs) to that used for GNR by making edge corrections for the dangling bonds.
format Article
author Arora, Vijay K.
Bhattacharyya, Arkaprava
author_facet Arora, Vijay K.
Bhattacharyya, Arkaprava
author_sort Arora, Vijay K.
title Unified bandgap engineering of graphene nanoribbons
title_short Unified bandgap engineering of graphene nanoribbons
title_full Unified bandgap engineering of graphene nanoribbons
title_fullStr Unified bandgap engineering of graphene nanoribbons
title_full_unstemmed Unified bandgap engineering of graphene nanoribbons
title_sort unified bandgap engineering of graphene nanoribbons
publisher Wiley-VCH Verlag
publishDate 2015
url http://eprints.utm.my/id/eprint/55944/
http://dx.doi.org/10.1002/pssb.201451005
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score 13.251813

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