Size dependence of electronic property in CVD-grown single-crystal graphene

Zhu, Wen, Shi, Haohao, Gan, Wei, Li, Pengju, Wu, Chuanqiang, Chen, Shuangming, Habib, Muhammad, Liu, Hengjie, Qin, Shengyong and Song, Li 2018, Size dependence of electronic property in CVD-grown single-crystal graphene, Materials research express, vol. 5, no. 7, pp. 1-8, doi: 10.1088/2053-1591/aace87.

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Title Size dependence of electronic property in CVD-grown single-crystal graphene
Author(s) Zhu, Wen
Shi, Haohao
Gan, Wei
Li, Pengju
Wu, Chuanqiang
Chen, Shuangming
Habib, Muhammad
Liu, Hengjie
Qin, Shengyong
Song, Li
Journal name Materials research express
Volume number 5
Issue number 7
Article ID 075005
Start page 1
End page 8
Total pages 8
Publisher IOP Publishing
Place of publication Bristol, Eng.
Publication date 2018-07
ISSN 2053-1591
Keyword(s) CVD growth
Graphene single-crystal
FET devices
Summary The electronic performance of graphene is largely related to its morphology, surface, size and various synthesis conditions, mainly because of the presence of grain boundary. Better understanding on the relationship between the size and electronic property is very important for graphene's applications in potential electronics. Herein, we selectively synthesized single-crystal graphene using a chemical vapor deposition (CVD) method. The obtained CVD-graphene exhibited various sizes, ranging from 20 μm to 120 μm. Our measurements of field effect transistor devices revealed that the charge carrier mobility of CVD-graphene could increase from 17.8 to 720 cm 2 V −1 s −1 with the size decreasing. The better electronic performance in comparable smaller-size graphene was ascribed to less grain boundary compared with the bigger one, which was further confirmed by our observations from scanning tunneling microscope/spectroscopy (STM/STS).
Language eng
DOI 10.1088/2053-1591/aace87
Field of Research 029999 Physical Sciences not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2018, IOP Publishing Ltd
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Document type: Journal Article
Collections: Institute for Frontier Materials
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