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Preparation and characterization of indium tin oxide films by sol-gel method

Sol-gel technology is a relatively simple and cheap process to deposit oxides under thin film form out of a sol. The experiments were developed in order to obtain nanomaterials by sol-gel method; nanomaterials that mixed with resin and additives can be deposited in thin and uniform films by spraying on different lignocellulosic composite surfaces. This method assures a functional finishing of the nanomaterials. These films are transparent and the surfaces are flat with no cracks. The influence of substrate type, morphology of the films and of the substrates before and after deposition was studied by means of optical microscopy, scanning electron microscopy (SEM) and atomic force microscopy (AFM). The sol-gel deposit on the lignocellulosic composite substrates lowered the sorption rates of water and water vapours.