The optical and electrophysical properties of Al-ZnO thin films

Nanocrystalline films of pure ZnO and Al-ZnO with a molar ratio Al:Zn = 1:99 and 3:97 were obtained by solid-phase pyrolysis. By XRD analysis the films have a wurtzite structure, the size of the crystallites is about 21 nm. The obtained films are almost transparent in the near UV range (the absorpti...

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Bibliographic Details
Main Authors: Ignatieva, I.O., Volkova, M.G., Gulyaeva, I.A., Starnikova, A.P., Petrov, V.V., Bayan, E.M.
Format: Conference Proceeding
Language:English
Subjects:
Aluminium oxide
Electrophysical properties
Optical properties
Thin films
Zinc oxide
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Summary:Nanocrystalline films of pure ZnO and Al-ZnO with a molar ratio Al:Zn = 1:99 and 3:97 were obtained by solid-phase pyrolysis. By XRD analysis the films have a wurtzite structure, the size of the crystallites is about 21 nm. The obtained films are almost transparent in the near UV range (the absorption coefficient is less than 16 %) and are transparent in the visible wavelength range. Electrophysical measurements have shown that the addition of minor amounts of aluminum to the ZnO film leads to a decrease in electrical conductivity by 2–3 orders of magnitude and the activation energy of electrical conductivity. The film with a molar ratio Al:Zn = 1:99 has the lowest activation energy of conductivity (0.23 eV).
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.09.028