Effect of oxidation on structural, optical and electrical properties of CdS thin films grown by sputtering

M. A. Islam, F. Haque, K. S. Rahman, N. Dhar, M. S. Hossain, Y. Sulaiman, Nowshad Amin

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

CdS thin films of 150 nm thick were grown by sputtering technique on top of commercially available FTO coated glass substrates. The films are oxidized by subsequently annealed in oxygen ambient at 350 °C. XRD, EDX, FTIR analysis, UV-vis spectrometry and Hall Effect measurement were used to characterize the films. XRD studies confirm the polycrystalline nature of the deposited films with phase transition from hexagonal CdS to orthorhombic CdS:CdO mixed structure. It has been observed from the UV-vis and EDX characterizations that the band gap increases with the increase of oxygen concentration incorporated to the annealed CdS thin films as well as with the increase of the oxidation time. Band gaps of the films were found to be in the range of 2.52 - 2.89 eV. Cd-S and Cd-O stretching vibration was observed from the FTIR spectra. The film resistivity and mobility are observed to change inversely with the inclusion of O<inf>2</inf> in the CdS thin films.

Original languageEnglish
Pages (from-to)3177-3180
Number of pages4
JournalOptik
Volume126
Issue number21
DOIs
Publication statusPublished - 1 Nov 2015

Fingerprint

Sputtering
Structural properties
Electric properties
Optical properties
sputtering
electrical properties
optical properties
Thin films
Oxidation
oxidation
thin films
Energy dispersive spectroscopy
Energy gap
Oxygen
Hall effect
oxygen
Spectrometry
Stretching
Phase transitions
inclusions

Keywords

  • CdS thin films
  • FTIR
  • Oxidization
  • Thermal annealing
  • UV-vis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering
  • Atomic and Molecular Physics, and Optics

Cite this

Islam, M. A., Haque, F., Rahman, K. S., Dhar, N., Hossain, M. S., Sulaiman, Y., & Amin, N. (2015). Effect of oxidation on structural, optical and electrical properties of CdS thin films grown by sputtering. Optik, 126(21), 3177-3180. https://doi.org/10.1016/j.ijleo.2015.07.078

Effect of oxidation on structural, optical and electrical properties of CdS thin films grown by sputtering. / Islam, M. A.; Haque, F.; Rahman, K. S.; Dhar, N.; Hossain, M. S.; Sulaiman, Y.; Amin, Nowshad.

In: Optik, Vol. 126, No. 21, 01.11.2015, p. 3177-3180.

Research output: Contribution to journalArticle

Islam, MA, Haque, F, Rahman, KS, Dhar, N, Hossain, MS, Sulaiman, Y & Amin, N 2015, 'Effect of oxidation on structural, optical and electrical properties of CdS thin films grown by sputtering', Optik, vol. 126, no. 21, pp. 3177-3180. https://doi.org/10.1016/j.ijleo.2015.07.078
Islam, M. A. ; Haque, F. ; Rahman, K. S. ; Dhar, N. ; Hossain, M. S. ; Sulaiman, Y. ; Amin, Nowshad. / Effect of oxidation on structural, optical and electrical properties of CdS thin films grown by sputtering. In: Optik. 2015 ; Vol. 126, No. 21. pp. 3177-3180.
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