TITLE:
Study of Optical and Electrical Properties of Nickel Oxide (NiO) Thin Films Deposited by Using a Spray Pyrolysis Technique
AUTHORS:
Ahmed J. Hassan
KEYWORDS:
Nickel Oxide, Spray Pyrolysis Technique
JOURNAL NAME:
Journal of Modern Physics,
Vol.5 No.18,
December
30,
2014
ABSTRACT: Nickel
oxide (NiO) thin film has been deposited on a glass substrate at a temperature
of 390°C ± 10°C using a simple and inexpensive spray pyrolysis technique. Nickel
nitrate salt solution (Ni(NO3)2·6H2O) was
employed to prepare the films and the film thickness was in order of 200 ± 5
nm. The structural, optical and electrical properties of NiO films were
investigated using X-ray diffraction (XRD), visible spectrum, DC conductivity
and Seebeck effect measurements. The results show that X-ray diffraction
techniques have shown that prepared film is polycrystalline structure type
cubic phase. The measurements of optical properties (transmittance (T) and absorbance (A)) of NiO films show that higher transmittance is 37.4% within the
wavelength range (300 - 900 nm). Also the results have shown that the higher absorbance
is 77.7%. The results of electrical properties have shown that at room
temperature electrical conductivity is 1.3 × 10-5 (Ω·cm)-1,
and also results have shown that all the films are of p-type due to the negative
Seebeck coefficient.