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Catalyst-free growth of nanographene films on various substrates

Zhang, Lianchang and Shi, Zhiwen and Wang, Yi and Yang, Rong and Shi, Dongxia and Zhang, Guangyu (2011) Catalyst-free growth of nanographene films on various substrates. Nano Research, 4 (3). pp. 315-321.

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Official URL: http://www.springerlink.com/content/b34524n2qr1456...

Abstract

We have developed a new method to grow uniform graphene films directly on various substrates, such as insulators, semiconductors, and even metals, without using any catalyst. The growth was carried out using a remote plasma enhancement chemical vapor deposition (r-PECVD) system at relatively low temperatures, enabling the deposition of graphene films up to 4-inch wafer scale. Scanning tunneling microscopy (STM) confirmed that the films are made up of nanocrystalline graphene particles of tens of nanometers in lateral size. The growth mechanism for the nanographene is analogous to that for diamond grown by PECVD methods, in spite of sp2 carbon atoms being formed in the case of graphene rather than sp3 carbon atoms as in diamond. This growth approach is simple, low-cost, and scalable, and might have potential applications in fields such as thin film resistors, gas sensors, electrode materials, and transparent conductive films.

Item Type:Article
Subjects:Physical Science > Nanophysics
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
Divisions:Faculty of Engineering, Science and Mathematics > School of Physics
Faculty of Engineering, Science and Mathematics > School of Chemistry
ID Code:10646
Deposited By:JNCASR
Deposited On:30 Apr 2011 06:41
Last Modified:30 Apr 2011 06:41

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