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

Authors

  • Zain A.Muhammad

Keywords:

(ZnO-Co) thin films, Chemical Spray Pyrolysis, dispersion parameters

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

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Published

2020-09-20

How to Cite

A.Muhammad, Z. . (2020). Determination the dispersion parameters and urbach tail of ZnO and ZnO:Co thin films prepared by The chemical Spray pyrolysis technique. Mustansiriyah Journal for Sciences and Education, 17(5), 21-30. Retrieved from https://edumag.uomustansiriyah.edu.iq/index.php/mjse/article/view/34

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Section

Research Article