Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Determination of optical constants of solgel-derived inhomogeneous TiO2 thin films by spectroscopic ellipsometry and transmission spectroscopy

Not Accessible

Your library or personal account may give you access

Abstract

Amorphous and nanocrystalline TiO2 thin films coated on a vitreous silica substrate by a solgel dip coating method are investigated for optical properties by spectroscopic ellipsometry (SE) together with transmission spectroscopy. A method of analysis of SE data to determine the degree of inhomogeneity of TiO2 films has also been presented. Instead of the refractive index, the volume fraction of void has been assumed to vary along the thickness of the films and an excellent agreement between the experimental and calculated data of SE below the fundamental band gap has been obtained. The transmission spectrum of these samples is inverted to obtain the extinction coefficient k spectrum in the wavelength range of 300–1600 nm by using the refractive indices and parameters of structure determined by SE. The nonzero extinction coefficient below the fundamental band-gap energy (3.2 eV) has been obtained for the nanocrystalline TiO2 and shows the presence of optical scattering in the film.

© 1998 Optical Society of America

Full Article  |  PDF Article
More Like This
Optical characterization of titania thin films produced by the solgel method and doped with Co2+ at different concentrations

F. Pacheco, R. Palomino, G. Martínez, A. Mendoza-Galván, Rogelio Rodríguez Talavera, and V. M. Castaño
Appl. Opt. 37(10) 1867-1872 (1998)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (10)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Tables (1)

You do not have subscription access to this journal. Article tables are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (12)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved