Processing and characterization of Ultrathin carbon coatings on glass

Journal Article · Wed Apr 15 04:00:00 EDT 2009 · ACS Applied Materials & Interfaces

DOI:https://doi.org/10.1021/am900032p· OSTI ID:21212732

Lee, H; Rajagopalan, R; Robinson, J; Pantano, C G ^[1]

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1. Penn State University, University Park, PA (United States)

Ultrathin carbon layers, on the order of 3-6 nm in thickness, were formed on glass substrates by spin coating and pyrolysis of polymer precursors. The organic precursors used were poly(furfuryl alcohol), coal tar pitch, and a photoresist. The carbon coatings were characterized by ellipsometry, optical profilometry, water contact angle, confocal Raman spectroscopy, UV-vis spectroscopy, and atomic force microscopy. We also report the transparency, hydrophobicity, friction, weathering resistance, and electrical conductivity of the carbon-coated glass. The results reveal that up to 97% transparent, ultrathin carbon films could be formed on glass substrates with a root-mean-square roughness of less than about to 0.3 nm. This carbon layer modified the otherwise hydrophilic surface of the glass to yield a water contact angle of 85{sup o}. The coatings were also found to provide a water barrier against weathering under hot and humid conditions. A 4.5-nm-thick carbon film on glass had a sheet resistance of 55.6 k {Omega} m and a conductivity of 40 S/cm.

• OSTI ID: 21212732
• Journal Information: ACS Applied Materials & Interfaces, Journal Name: ACS Applied Materials & Interfaces Journal Issue: 4 Vol. 1; ISSN 1944-8244
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
CARBON
COAL TAR
COATINGS
ELECTRIC CONDUCTIVITY
GLASS
LAYERS
PITCHES
PYROLYSIS
SURFACE COATING
THICKNESS