Surface texture modification of spin-coated SiO2 xerogel thin films by TMCS silylation |
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Authors: | YOGESH S MHAISAGAR BHAVANA N JOSHI A M MAHAJAN |
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Affiliation: | 1. Department of Electronics, North Maharashtra University, Jalgaon, 425 001, India
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Abstract: | The SiO2 xerogel thin films were deposited successfully by sol?Cgel technique via the acid-catalyzed hydrolysis and condensation of tetraethylorthosilicate (TEOS) with ethanol as a solvent. Further, the deposited thin films were treated wet chemically by trimethylchlorosilane (TMCS) and hexane solution with 10% and 15% volume ratio to remove the hydroxyl groups from the surface of deposited SiO2 thin films. These as deposited and surface-modified films were characterized by ellipsometer, Fourier transform infrared (FTIR) spectrometer and contact angle meter. The presence of 2900 and 850?cm?1 peaks of CH3 vibrations in FTIR spectra of surface-modified films confirms the hydrphobisation of SiO2 surface. The maximum contact angle of 108·7° was observed for the surface-modified film at 10% TMCS. |
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