Effect of CdCl2 treatment on structural and electronic property of CdTe thin films deposited by magnetron sputtering

M. A. Islam, M. S. Hossain, M. M. Aliyu, M. R. Karim, T. Razykov, Kamaruzzaman Sopian, Nowshad Amin

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The structural and electrical properties of the magnetron sputtered CdTe thin films with subsequent CdCl2 solution treatment have been studied with a major focus on the influence of CdCl2 treatment to achieve high quality thin films. In this study, CdTe films with a thickness of 1.5 to 2 μm have been grown using the magnetron sputtering technique on top of glass substrate at an optimized substratetemperature of 250 °C. Aqueous CdCl 2 concentration varied from 0.3 mol to 1.2 mol with the annealing temperature from 360 °C to 450 °C. The surface roughness of the films increases with the increase of solution concentration, while it fluctuates with the increase of annealing temperature. The density of nucleation centers and the strain increases for the films treated at 360 °C with 0.3 M to1.2 M while the grain growth of the films reduces. However, these strains are released at higher annealing temperatures, resulting in reduced dislocation densities, structural defects as well as increased crystalline property and grain size. The carrier concentration increases with the increase of treated CdCl2 concentration and subsequent annealing temperature. The highest carrier concentration of 1.05 × 1014/cm3 was found for the CdTe thin films treated with 0.3 M CdCl2solution followed by an annealing treatment at 420 °C for 20 min.

Original languageEnglish
Pages (from-to)367-374
Number of pages8
JournalThin Solid Films
Volume546
DOIs
Publication statusPublished - 1 Nov 2013

Fingerprint

Cadmium Chloride
Electronic properties
Magnetron sputtering
Structural properties
magnetron sputtering
Annealing
Thin films
annealing
thin films
electronics
Carrier concentration
Temperature
temperature
Grain growth
surface roughness
Electric properties
Nucleation
grain size
Surface roughness
electrical properties

Keywords

  • CdCl treatment
  • CdTe thin films
  • Magnetron sputtering
  • Vacuum annealing

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry
  • Metals and Alloys
  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Cite this

Effect of CdCl2 treatment on structural and electronic property of CdTe thin films deposited by magnetron sputtering. / Islam, M. A.; Hossain, M. S.; Aliyu, M. M.; Karim, M. R.; Razykov, T.; Sopian, Kamaruzzaman; Amin, Nowshad.

In: Thin Solid Films, Vol. 546, 01.11.2013, p. 367-374.

Research output: Contribution to journalArticle

Islam, M. A. ; Hossain, M. S. ; Aliyu, M. M. ; Karim, M. R. ; Razykov, T. ; Sopian, Kamaruzzaman ; Amin, Nowshad. / Effect of CdCl2 treatment on structural and electronic property of CdTe thin films deposited by magnetron sputtering. In: Thin Solid Films. 2013 ; Vol. 546. pp. 367-374.
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