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Two-dimensional excitonic photoluminescence in graphene on a Cu surface

Abstract:

Despite having outstanding electrical properties, graphene is unsuitable for optical devices because of its zero band gap. Here, we report two-dimensional excitonic photoluminescence (PL) from graphene grown on a Cu(111) surface, which shows an unexpected and remarkably sharp strong emission near 3.16 eV (full width at half-maximum ≤3 meV) and multiple emissions around 3.18 eV. As temperature increases, these emissions blue shift, displaying the characteristic negative thermal coefficient of ...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1021/acsnano.7b00245

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Institution:
University of Oxford
Oxford college:
Queens College
Role:
Author
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Grant:
National Honor Scientist Program (2010-0020414
Publisher:
American Chemical Society Publisher's website
Journal:
ACS Nano Journal website
Volume:
11
Issue:
3
Pages:
3207-3212
Publication date:
2017-02-23
Acceptance date:
2017-02-23
DOI:
EISSN:
1936-086X
ISSN:
1936-0851
Pmid:
28231429
Source identifiers:
682601
Language:
English
Keywords:
Pubs id:
pubs:682601
UUID:
uuid:14a3b04f-0e7b-4391-80c7-b61cb5e476fa
Local pid:
pubs:682601
Deposit date:
2017-09-04

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