Preparation and Characterization of Tio2 Thin Films by Spin Coating Method

T Vasuki, M Saroja, M Venkatachalam, S Shankar

Abstract


TiO2 thin films prepared and deposited on glass substrate by sol-gel spin coating method. The specimens were dried at 250 for 30minutes.

The films obtained were annealed at 450°c  and 550° c  and then cooled, inheriting the high adherence to the substrates  transparency, Chemical and mechanical stability.   The surface morphology,film composition, structure and optical properties were evaluated from SEM and  XRD .

Wave length of the refractive index and absorption co-efficients in the UV VIS-near IR regions as well as the optical band gap were inferred from optical transmittance measurements. The characteristics of the investigated thin films are interpreted in terms amorphous-crystalline phase.


Keywords


Sol-gel, Spin coating, Morphology, Refractive index, Absorbtion co-efficients.

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