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Photoluminescence segmentation within individual hexagonal monolayer tungsten disulfide domains grown by chemical vapor deposition.

Abstract:

We show that hexagonal domains of monolayer tungsten disulfide (WS2) grown by chemical vapor deposition (CVD) with powder precursors can have discrete segmentation in their photoluminescence (PL) emission intensity, forming symmetric patterns with alternating bright and dark regions. Two-dimensional maps of the PL reveal significant reduction within the segments associated with the longest sides of the hexagonal domains. Analysis of the PL spectra shows differences in the exciton to trion rat...

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Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1021/acsami.6b16287

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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Materials
Role:
Author
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Institution:
University of Oxford
Division:
MPLS
Department:
Engineering Science
Role:
Author
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Funding agency for:
Warner, J
Publisher:
American Chemical Society Publisher's website
Journal:
ACS Applied Materials & Interfaces Journal website
Volume:
9
Issue:
17
Pages:
15005–15014
Publication date:
2017-04-20
Acceptance date:
2017-04-05
DOI:
EISSN:
1944-8252
ISSN:
1944-8244
Source identifiers:
691029
Language:
English
Keywords:
Pubs id:
pubs:691029
UUID:
uuid:79bdae6b-f01f-421a-ab3a-d561fc3ec578
Local pid:
pubs:691029
Deposit date:
2017-05-05

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