Properties of (NiO)1-x(ZnO)x thin films deposited by spray pyrolysis
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Date
2015
Journal Title
Journal ISSN
Volume Title
Publisher
Springer
Abstract
Themain goal of the presentwork is the study of (NiO)1-x(ZnO)xmetal oxide thin films to determine their applicability
in optoelectronic devices. For this purpose, well adherent films with x = 0, 0.25, 0.50, 0.75, and 1, were
deposited by spray pyrolysis technique on glass substrates heated at 400 °C. Nickel chloride hexahydrate and
zinc acetate dihydrate were used as precursors. Structural, electrical, optical and morphological properties of
films have been studied. The obtained results indicate the formation ofNiO and ZnO phases mixed in defined proportions
for intermediate compositions and the lattice constant of NiO increases with the nominal fraction x of
Zn. The dark electrical conductivity at room temperature varied between 10−9 and 10−5 Ω cm−1. A transmittance
in the visible region situated between 50% and 80% was observed. The band-gap changes of the samples
are situated between 3.21 eV and 3.74 eV.
Description
Keywords
Metal oxides, Thin films, Spray pyrolysis, Lattice constants, Electrical conductivity, Band gap