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Quantitative secondary electron imaging for work function extraction at atomic level and layer identification of graphene

Zhou, Yangbo, Fox, Daniel S., Maguire, Pierce, O'Connell, Robert, Masters, Robert, Rodenburg, Cornelia, Wu, Hanchun, Dapor, Maurizio, Chen, Ying and Zhang, Hongzhou 2016, Quantitative secondary electron imaging for work function extraction at atomic level and layer identification of graphene, Scientific reports, vol. 6, Article number: 21045, pp. 1-8, doi: 10.1038/srep21045.

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Title Quantitative secondary electron imaging for work function extraction at atomic level and layer identification of graphene
Author(s) Zhou, Yangbo
Fox, Daniel S.
Maguire, Pierce
O'Connell, Robert
Masters, Robert
Rodenburg, Cornelia
Wu, Hanchun
Dapor, Maurizio
Chen, YingORCID iD for Chen, Ying orcid.org/0000-0002-7322-2224
Zhang, Hongzhou
Journal name Scientific reports
Volume number 6
Season Article number: 21045
Start page 1
End page 8
Total pages 8
Publisher Nature Publishing Group
Place of publication London, Eng.
Publication date 2016
ISSN 2045-2322
Keyword(s) Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
MICROSCOPY
Summary Two-dimensional (2D) materials usually have a layer-dependent work function, which require fast and accurate detection for the evaluation of their device performance. A detection technique with high throughput and high spatial resolution has not yet been explored. Using a scanning electron microscope, we have developed and implemented a quantitative analytical technique which allows effective extraction of the work function of graphene. This technique uses the secondary electron contrast and has nanometre-resolved layer information. The measurement of few-layer graphene flakes shows the variation of work function between graphene layers with a precision of less than 10 meV. It is expected that this technique will prove extremely useful for researchers in a broad range of fields due to its revolutionary throughput and accuracy.
Language eng
DOI 10.1038/srep21045
Field of Research 100708 Nanomaterials
Socio Economic Objective 970110 Expanding Knowledge in Technology
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2016, The Authors
Free to Read? Yes
Use Rights Creative Commons Attribution licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30083095

Document type: Journal Article
Collections: Institute for Frontier Materials
Open Access Collection
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Created: Wed, 27 Apr 2016, 15:13:16 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.