Processing and Characterization of Ultrathin Carbon Coatings on Glass

Autor:	Carlo G. Pantano, Hoikwan Lee, Joshua A. Robinson, Ramakrishnan Rajagopalan
Rok vydání:	2009
Předmět:	Contact angle Spin coating Surface coating Materials science Carbon film chemistry Carbonization chemistry.chemical_element General Materials Science Composite material Pyrolysis Carbon Sheet resistance
Zdroj:	ACS Applied Materials & Interfaces. 1:927-933
ISSN:	1944-8252 1944-8244
DOI:	10.1021/am900032p
Popis:	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 approximately 0.3 nm. This carbon layer modified the otherwise hydrophilic surface of the glass to yield a water contact angle of 85 degrees . 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 kOmega m and a conductivity of 40 S/cm.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8ad0255cc8b55ac3ea5291303ab6a411 https://doi.org/10.1021/am900032p Zobrazit plný text záznamu