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  A simple means of producing highly transparent graphene on sapphire using chemical vapor deposition on a copper catalyst.

Anemone, G., Climent-Pascual, E., Al Taleb, A., Yu, H. K., Jimenez-Villacorta, F., Prieto, C., et al. (2018). A simple means of producing highly transparent graphene on sapphire using chemical vapor deposition on a copper catalyst. Carbon, 139, 593-598. doi:10.1016/j.carbon.2018.07.022.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0002-5F9C-5 Version Permalink: http://hdl.handle.net/21.11116/0000-0003-205D-1
Genre: Journal Article

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 Creators:
Anemone, G., Author
Climent-Pascual, E., Author
Al Taleb, A., Author
Yu, H. K.1, Author              
Jimenez-Villacorta, F., Author
Prieto, C., Author
Wodtke, A. M.1, Author              
De Andres, A., Author
Farias, D., Author
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1Department of Dynamics at Surfaces, MPI for biophysical chemistry, Max Planck Society, ou_578600              

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 Abstract: Chemical vapor deposition (CVD) is one of the best ways to scalably grow low cost, high quality graphene on metal substrates; unfortunately, it not ideal for producing graphene on dielectric substrates. Here, we demontrate production of a high quality graphene layer on Sapphire using CVD with a copper catalyst. The catalyst consists of a thin copper film grown epitaxially on alpha-Al2O3 (0001). After CVD growth of Graphene, the copper can be removed by simple evaporation in the presence of a carbon source (C2H4). We characterized the resulting graphene layer using Raman spectroscopy, atomic force microscopy (AFM), optical transmission and helium atom scattering (HAS). The sample exhibited a reduced Raman D peak and an excellent 2D to G ratio. AFM and HAS show large graphene domains over a macroscopic region. We measured > 86% transparency over the visible spectrum.

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Language(s): eng - English
 Dates: 2018-07-172018-11
 Publication Status: Published in print
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 Rev. Method: Peer
 Identifiers: DOI: 10.1016/j.carbon.2018.07.022
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Title: Carbon
Source Genre: Journal
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Pages: - Volume / Issue: 139 Sequence Number: - Start / End Page: 593 - 598 Identifier: -