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Journal of Materials Chemistry C Vol - 5 Issue - 7

Journal of Materials Chemistry C Vol - 5 Issue - 6

Journal of Materials Chemistry C Vol - 5 Issue - 5

Journal of Materials Chemistry C Vol - 5 Issue - 4

Journal of Materials Chemistry C Vol - 5 Issue - 3

Journal of Materials Chemistry C Vol - 5 Issue - 2

Journal of Materials Chemistry C Vol -4

Journal of Materials Chemistry C Vol -3

Journal of Materials Chemistry C Vol -2

Journal of Materials Chemistry C Vol -1

High quality graphene films with a clean surface prepared by an UV/ozone assisted transfer process

Content Provider	Royal Society of Chemistry (RSC)
Author	Yuan, Qilong Xu, Yang Chen, Ding Dai, Dan Jiang, Nan Sun, Hongyan Lin, Cheng-Te Wu, Yuming Guo, Liangchao Zhao, Pei
Copyright Year	2017
Abstract	Graphene shows great promise as a transparent conductive electrode for optoelectronic applications. However, residues generated during the graphene transfer process lead to the degradation of device performance. Here, we show that a combination of UV/ozone pretreatment with the conventional process of graphene transfer can help in obtaining a large area graphene film with a clean surface on arbitrary substrates. In general, after CVD growth, a graphene film would be formed on both bottom and upper surfaces of a Cu foil. With UV/ozone pretreatment, a graphene layer with an undamaged and clean surface can be obtained, which is free of the residues. In addition, the quality of the obtained graphene can also be improved, which is revealed by the increase of the I2D/IG ratio from 2.0 to 3.6 for graphene films prepared without and with UV/ozone pretreatment, respectively. The transferred graphene films show higher transparency (97.5% at 550 nm), and the electron mobility (1178 cm2 V−1 s−1) can be improved by a factor of two compared to that prepared by the conventional transfer process (685 cm2 V−1 s−1). Considering its high efficiency, low cost, and easy scalability, the UV/ozone-assisted transfer method can be beneficial to the performance of graphene-based device applications such as transparent conducting electrodes.
Starting Page	1880
Ending Page	1884
Page Count	5
File Format	HTM / HTML PDF
ISSN	20507526
Volume Number	5
Issue Number	8
Journal	Journal of Materials Chemistry C
DOI	10.1039/c6tc05505b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	CVD Graphene Electrode Optoelectronics Ozone Electron mobility
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry

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