<abstract xmlns="http://www.w3.org/1999/xhtml"><p>ZnO thin films were deposited on a glass substrate by dip coating technique using a solution of zinc acetate, ethanol and distilled water. Optical constants, such as refractive index n and extinction coefficient k. were determined from transmittance spectrum in the ultraviolet-visible-near infrared (UV-Vis-NIR) regions using envelope methods. The films were found to exhibit high transmittance, low absorbance and low reflectance in the visible regions. Absorption coefficient α and the thickness of the film t were calculated from interference of transmittance spectra. The direct optical band gap of the films was in the range of 3.98 to 3.54 eV and the thickness of the films was evaluated in the range of 173 to 323 nm, while the refractive index slightly varied in the range of 1.515 to 1.622 with an increase in withdrawal speed from 100 to 250 mm/s. The crystallographic structure of the films was analyzed with X-ray diffractometer. The films were amorphous in nature. </p></abstract>

ZnO thin films were deposited on a glass substrate by dip coating technique using a solution of zinc acetate, ethanol and distilled water. Optical constants, such as refractive index n and extinction coefficient k. were determined from transmittance spectrum in the ultraviolet-visible-near infrared (UV-Vis-NIR) regions using envelope methods. The films were found to exhibit high transmittance, low absorbance and low reflectance in the visible regions. Absorption coefficient α and the thickness of the film t were calculated from interference of transmittance spectra. The direct optical band gap of the films was in the range of 3.98 to 3.54 eV and the thickness of the films was evaluated in the range of 173 to 323 nm, while the refractive index slightly varied in the range of 1.515 to 1.622 with an increase in withdrawal speed from 100 to 250 mm/s. The crystallographic structure of the films was analyzed with X-ray diffractometer. The films were amorphous in nature.

Fabrication and properties of zinc oxide thin film prepared by sol-gel dip coating method

Lahore College for Women University, Lahore-54000, Pakistan

Centre of Excellence in Solid state Physics, University of the Punjab, Lahore-54900, Pakistan

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

ZnO thin films were deposited on a glass substrate by dip coating technique using a solution of zinc acetate, ethanol and distilled water. Optical constants,...

Fabrication and properties of zinc oxide thin film prepared by sol-gel dip coating method

Pubblicato online: 30 ago 2016

Pagine: 515 - 520

Ricevuto: 05 ott 2014

Accettato: 21 mag 2015

DOI: https://doi.org/10.1515/msp-2015-0085

Parole chiave
thin films, sol-gel, X-ray diffraction, optical properties

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Fabrication and properties of zinc oxide thin film prepared by sol-gel dip coating method

Pubblicato online: 30 ago 2016

Pagine: 515 - 520

Ricevuto: 05 ott 2014

Accettato: 21 mag 2015

DOI: https://doi.org/10.1515/msp-2015-0085

Parole chiavethin films, sol-gel, X-ray diffraction, optical properties

© 2016

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Parole chiave
thin films, sol-gel, X-ray diffraction, optical properties