Abstract
A new solvent-less sol-gel route for silica film elaboration is presented. TEOS polymerization is induced by ozone bubbling through the initial sol composed of TEOS and water with the molar ratio R = [H2O]/[Si]. Replacing ozone by pure oxygen allows for demonstrating the specific effects of ozone. With ozone bubbling, a comparison of certain film properties is made between R = 0 and R = 5 with HCl aqueous solution (pH = 1.8). The opto-geometrical properties of the films are studied by spectroscopic ellipsometry, the surface topography by atomic force microscopy and the chemical content by infra-red spectroscopy. The huge influence of the R value on sol and film properties is shown.
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Brenier, R., Gagnaire, A. The sol-gel route of TEOS ozonation. J Sol-Gel Sci Technol 38, 37–46 (2006). https://doi.org/10.1007/s10971-006-6089-8
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DOI: https://doi.org/10.1007/s10971-006-6089-8