Variations of Optical and Structural Properties of CoxOy Thin Films with Thermal Treatment
Joint Authors
Offiah, S. U.
Ezugwu, S. C.
Ekwealor, A. B. C.
Ezema, F. I.
Source
Indian Journal of Materials Science
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-5, 5 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-03-12
Country of Publication
Egypt
No. of Pages
5
Main Subjects
Abstract EN
The effects of thermal treatment on the optical and structural properties of cobalt oxide CoxOy thin films synthesized in the pores of PVP by chemical bath deposition technique were investigated.
Films deposited were crystalline.
The optical properties of the films were got from absorbance, transmittance reflectance, refractive index, absorption coefficient, and extinction coefficient measurements.
The synthesized CoxOy films turned out to be cobalt oxyhydroxide , CoO(OH), nanocrystals.
The crystals obtained were of size 41.84 nm; however, as annealing temperature increased, the size decreased to 16.28 nm.
The absorption coefficient, refractive index, and extinction coefficient were found to increase with increase in annealing temperature though not sequentially.
For the same energy ranges of the incident photons, the absorption coefficient and refractive index ranged from 0.2 to 1.8 and from 1.4 to 2.3, respectively.
The energy band-gap of the films ranged from 1.96 eV to 2.22 eV.
American Psychological Association (APA)
Ekwealor, A. B. C.& Offiah, S. U.& Ezugwu, S. C.& Ezema, F. I.. 2014. Variations of Optical and Structural Properties of CoxOy Thin Films with Thermal Treatment. Indian Journal of Materials Science،Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-466405
Modern Language Association (MLA)
Ekwealor, A. B. C.…[et al.]. Variations of Optical and Structural Properties of CoxOy Thin Films with Thermal Treatment. Indian Journal of Materials Science No. 2014 (2014), pp.1-5.
https://search.emarefa.net/detail/BIM-466405
American Medical Association (AMA)
Ekwealor, A. B. C.& Offiah, S. U.& Ezugwu, S. C.& Ezema, F. I.. Variations of Optical and Structural Properties of CoxOy Thin Films with Thermal Treatment. Indian Journal of Materials Science. 2014. Vol. 2014, no. 2014, pp.1-5.
https://search.emarefa.net/detail/BIM-466405
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-466405