International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2557

Full Length Research Paper

Dielectric properties of spray pyrolized Aluminum doped Cadmium sulfide (Al-doped CdS) thin films

A. Hasnat1* and J. Podder2
1Department of Physics, Jagannath University, Dhaka, Bangladesh. 2Department of Physics, Bangladesh University of Engineering and Technology (BUET), Dhaka, Bangladesh.
Email: [email protected]

  •  Accepted: 30 November 2012
  •  Published: 16 December 2012


Spray pyrolysis has been applied to deposit of Cadmium sulfide (CdS) and Aluminium doped Cadmium sulfide (Al-doped CdS) thin films. These films were used in various devices such as solar cells, sensors, and solid oxide fuel cells. Optical and dielectric properties such as transmittance (T%), absorption coefficient (α), real dielectric constant (), imaginary dielectric constant (), and dielectric loss (δ) have been calculated. All the films demonstrated more than 65% transmittance at wavelengths longer than 500 nm. Absorption is increased up to 9% of Al-doping on CdS thin films. Dielectric peak is observed near 325 nm, and after 500 nm it was saturated.


Key words: Cadmium sulfide (CdS), dielectic properties, spray pyrolysis, Aluminium doped Cadmium sulfide (Al-doped CdS), Cadmium sulfide: Aluminium (CdS : Al), Aluminium (Al).