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Transparent ultrathin conducting carbon films

Schreiber, Martin; Lutz, Tarek; Keeley, Gareth P.; Kumar, Shishir; Boese, Markus; Krishnamurthy, Satheesh and Duesberg, Georg S. (2010). Transparent ultrathin conducting carbon films. Applied Surface Science, 256(21) pp. 6186–6190.


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Ultrathin conductive carbon layers (UCCLs) were created by spin coating resists and subsequently converting them to conductive films by pyrolysis. Homogeneous layers as thin as 3 nm with nearly atomically smooth surfaces could be obtained. Layer characterization was carried out with the help of atomic force microscopy, profilometry, four-point probe measurements, Raman spectroscopy and ultraviolet–visible spectroscopy. The Raman spectra and high-resolution transmission electron microscopy image indicated that a glassy carbon like material was obtained after pyrolysis. The electrical properties of the UCCL could be controlled over a wide range by varying the pyrolysis temperature. Variation in transmittance with conductivity was investigated for applications as transparent conducting films. It was observed that the layers are continuous down to a thickness below 10 nm, with conductivities of 1.6×104 S/m, matching the best values observed for pyrolyzed carbon films. Further, the chemical stability of the films and their utilization as transparent electrochemical electrodes has been investigated using cyclic voltammetry and electrochemical impedance spectroscopy.

Item Type: Journal Item
Copyright Holders: 2010 Elseiver B.V.
ISSN: 0169-4332
Project Funding Details:
Funded Project NameProject IDFunding Body
UREKA and the CSET programNot SetScience Foundation Ireland
Keywords: conductive carbon films; transparent films; pyrolysis; glassy carbon; graphene; electrochemical electrodes
Academic Unit/School: Faculty of Science, Technology, Engineering and Mathematics (STEM) > Engineering and Innovation
Faculty of Science, Technology, Engineering and Mathematics (STEM)
Item ID: 39794
Depositing User: Satheesh Krishnamurthy
Date Deposited: 27 Mar 2014 12:37
Last Modified: 08 Dec 2018 01:57
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