NDLI: Effect of annealing temperature on the structural, morphological, optical and electrical properties of Co$_{3}$O$_{4}$ thin film by nebulizer spray pyrolysis technique

Content Provider	Springer Nature Link
Author	Magowri, R. Mary Mathelane, R. Valanarasu, S. Kulandaisamy, I. Benazir Fathima, A. Kathalingam, A.
Copyright Year	2015
Abstract	In this investigation, spray pyrolysis using nebulizer technique is employed to fabricate cobalt oxide (Co$_{3}$O$_{4}$) thin films onto glass substrate at 250 °C. The deposited homogeneous Co$_{3}$O$_{4}$ thin films were thermally treated under different annealing temperatures. The influences of annealing temperature on the properties of the coated thin films are examined by XRD, SEM, EDAX, UV–Vis–NIR spectrometer and four probe techniques. XRD analysis confirmed the growth of polycrystalline cubic Co$_{3}$O$_{4}$ thin films. SEM analysis showed that the size of the spherical grains is increased with the increase of annealing temperature. The EDAX spectra have indicated that the grown film is in the composition of Co and O. The optical spectra has shown a decrease in transmittance for the increase of annealing temperature, and consequently the band-gap energy values are reduced as 2.26, 2.05 and 1.73 eV for as-deposited, annealed at 300 and 400 °C respectively. The optical constants like refractive index, extinction coefficient have also been determined from the optical measurements. Current versus voltage studies showed the ohmic nature of the films.
Starting Page	3860
Ending Page	3866
Page Count	7
File Format	PDF
ISSN	09574522
Journal	Journal of Materials Science: Materials in Electronics
Volume Number	27
Issue Number	4
e-ISSN	1573482X
Language	English
Publisher	Springer US
Publisher Date	2015-12-26
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Optical and Electronic Materials Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Biomaterials Biophysics Condensed Matter Physics Electronic, Optical and Magnetic Materials Bioengineering Electrical and Electronic Engineering Biomedical Engineering

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