TY - JOUR
T1 - Processing and characterization of ultrathin carbon coatings on glass
AU - Lee, Hoikwan
AU - Rajagopalan, Ramakrishnan
AU - Robinson, Joshua
AU - Pantano, Carlo G.
PY - 2009/4/29
Y1 - 2009/4/29
N2 - 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 ∼0.3 nm. This carbon layer modified the otherwise hydrophilic surface of the glass to yield a water contact angle of 85°. 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 kδ m and a conductivity of 40 S/cm.
AB - 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 ∼0.3 nm. This carbon layer modified the otherwise hydrophilic surface of the glass to yield a water contact angle of 85°. 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 kδ m and a conductivity of 40 S/cm.
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U2 - 10.1021/am900032p
DO - 10.1021/am900032p
M3 - Article
C2 - 20356019
AN - SCOPUS:84862833013
SN - 1944-8244
VL - 1
SP - 927
EP - 933
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 4
ER -