期刊
APPLIED SURFACE SCIENCE
卷 419, 期 -, 页码 252-258出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apsusc.2017.05.028
关键词
Graphene oxide; Covalent functionalization; Work function; Organic field-effect transistor
类别
资金
- Nano/Material Technology Development Program through the National Research Foundation of Korea (NRF) - Ministry of Education, Science and Technology [NRF-2016M3A7B4900119]
- Korea Ministry of Environment (MOE) as The Chemical Accident Prevention Technology Development Project
- National Research Council of Science & Technology (NST), Republic of Korea [SI1703, SI1703-01] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
- National Research Foundation of Korea [2016M3A7B4900119] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
We report a simple method to produce work-function-tuned graphene nanosheets based on the nudeophilic substitution of the epoxy groups on graphene oxide. The electrical property of the graphene oxide is controlled dramatically, which results in the apparent work functions in a broad range between 3.73 eV and 5.1 eV, by attaching various functional groups on the graphene surface. As a proof of concept, we successfully demonstrated organic field effect transistors incorporating the functionalized graphene nanosheet interlayers. Here, when nanosheets were applied in an organic transistor as the interlayer material between electrodes and organic channel, the device performance was significantly improved. Our approach can be utilized to increase the performance and the flexibility of various advanced carbon-material-based hybrid electrical devices. (C) 2017 Elsevier B.V. All rights reserved.
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