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 metal...
Saved in:
Main Authors: | , |
---|---|
Format: | Article |
Published: |
Wiley-VCH Verlag
2014
|
Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/63162/ http://dx.doi.org/10.1002/pssb.201451005 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
my.utm.63162 |
---|---|
record_format |
eprints |
spelling |
my.utm.631622017-06-15T02:11:20Z http://eprints.utm.my/id/eprint/63162/ Unified bandgap engineering of graphene nanoribbons Arora, Vijay Kumar 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 2014 Article PeerReviewed Arora, Vijay Kumar and Bhattacharyya, Arkaprava (2014) Unified bandgap engineering of graphene nanoribbons. Physica Status Solidi B-Basic Solid State Physics, 251 (11). p. 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 Kumar 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 Kumar Bhattacharyya, Arkaprava |
author_facet |
Arora, Vijay Kumar Bhattacharyya, Arkaprava |
author_sort |
Arora, Vijay Kumar |
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 |
2014 |
url |
http://eprints.utm.my/id/eprint/63162/ http://dx.doi.org/10.1002/pssb.201451005 |
_version_ |
1643655637553381376 |
score |
13.201949 |