A.Muhammad, Z. (2016). Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique. Alustath, 0(5), 21-30.
Zain A.Muhammad. "Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique". Alustath, 0, 5, 2016, 21-30.
A.Muhammad, Z. (2016). 'Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique', Alustath, 0(5), pp. 21-30.
A.Muhammad, Z. Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique. Alustath, 2016; 0(5): 21-30.

Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique

Journal of College of Education
Article 1, Volume 0, Issue 5, November 2017, Pages 21-30
Author
Zain A.Muhammad
Abstract
Undoped and Co doped ZnO samples with two different percentage of Co content (1 %, 5 % ) were prepared by a chemical Spray pyrolysis technique. Transmission and absorptance spectra have been recorded in the wavelength range (300-900) nm. From The refractive index data for infinite wavelength we have calculated single oscillator energy and dispersion energy proposed by Wemple -DiDomenico model which was found to be decrease from (2.42 - 1.47) eV as the doping percentage increase. the optical energy gap which was found according to Tauc model were (3.17-3.29) eV. The obtained values for Urbach energies was found increasing from (0.757-0.902) eV upon doping.
Keywords
ZnO; thin films; Chemical Spray Pyrolysis; dispersion parameters
Statistics
Article View: 52
PDF Download: 39


Journal Management System. Powered by ejournalplus.com