Monoclinic CeTi2O6 thin film and sol-gel process for the preparation thereof
AssigneeCouncil of Scientific and Industrial Research
InventorsVerma Amita, Agnihotry Suhasini Avinash, Bakhshi Ashok Kumar
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Abstract
A monoclinic CeTi2O6 thin film and a sol-gel process for the deposition of CeTi2O6 thin films, which has applications as passive counter electrodes in electrochromic devices, sensors and photocatalytic agent is presented. This film can be obtained by spin coating a solution, which comprises both titanium and cerium precursors on to electrically conducting or insulating glass substrates and annealing at a temperature of 600° C. for 5 min. in air. The Ce:Ti mole ratio in the deposition sol for the preparation of the film is identified in the range of 0.4:1 and 0.6:1.
Claims8
A sol-gel process for the preparation of monoclinic CeTi2O6 thin film form, the said process comprising the steps of:
- a) preparing an alcoholic solution of about 0.20-0.25 M cerium chloride heptahydrate in absolute ethanol,
- b) adding the solution prepared in step a) to titanium propoxide having concentration in the solution in the range of 0.331-0.624 M, followed by stirring for a period of 4-10 min and aging at 20-30° C. for a period of about one week, wherein the Ce:Ti mole ratio used is in the range of 0.4:1 to 0.6:1,
- c) spin coating the above said aged solution on electrically conducting substrate or micro slide glass, followed by air drying for a period of about 10-20 min. and annealing the film in air, at a temperature in the range of 580-620° C. for a period of 5-10 min. to obtain the desired monoclinic CeTi2O6 thin film.
Dependencies are inferred from the claim text.