RETRACTED:Influence of Fe and Al Dopants on the Optical Properties of Zinc Oxide Thin Films Obtained by Spray Pyrolysis

An investigation has been done to study the influence of the Fe and Al doping concentration on the optical properties of zinc oxide thin films. A spray pyrolysis system was used to obtain ZnO:M films doped with Iron and Aluminum, using zinc acetate dihydrate, hydrated iron chlorate and hydrated aluminum chlorate, respectively. The temperature and the concentration were fixed at 450°C and 0.1mol/L, respectively. Our thin films deposed on glass substrate. UV-VIS spectrophotometer has been used for the layers characterization. The optical transmittance spectra showed that the 2% Al dopand improves the optical transmittance in the visible that the Fe dopand. Zinc oxide thin films is the n type semiconductor with direct optical band gap varied between 3.219-3.346eV for obtain the films in photovoltaic application. But the urbach energy of ZnO thin films undoped and doped by Iron and Aluminum is varied between 101– 202 meV.

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International Journal of Engineering Research in Africa Vol. 29

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Periodical:

International Journal of Engineering Research in Africa (Volume 29)

Pages:

21-27

DOI:

https://doi.org/10.4028/www.scientific.net/JERA.29.21

Online since:

March 2017

Authors:

Nadjate Abdelmalek, Hichem Farh*

Keywords:

Optical Band Gap, Transmittance, Urbach Energy, UV-Visible, ZNO, ZnO:Al, ZnO:Fe

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Creative Commons CC BY 4.0

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* - Corresponding Author

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