Optical characterization of the CdZn(S1-xSex)(2) thin films deposited by spray pyrolysis method

Ilican S., Zor M., Caglar Y., Caglar M.

OPTICA APPLICATA, vol.36, no.1, pp.29-37, 2006 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 36 Issue: 1
  • Publication Date: 2006
  • Journal Name: OPTICA APPLICATA
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.29-37
  • Keywords: thin film, spray pyrolysis, optical constants, band gap energy, SOLAR-CELLS, CDS, GROWTH, SPECTRA, SI, LUMINESCENCE, INTERFACES, CONSTANTS, TRANSPORT, CRYSTALS
  • Anadolu University Affiliated: Yes

Abstract

CdZn(S1-xSex)(2) thin films have been deposited onto glass substrates by the spray pyrolysis method at a 275 degrees C substrate temperature. The average optical transmittance of all the films was over 65% in the wavelength range 450-800 nm. The optical absorption studies reveal that the transition is direct with band gap energy values between 2.47-3.04 eV. The optical constants such as refractive index, extinction coefficient and dielectric constants have been calculated for these films. The dispersion parameters such as E-o (single-oscillator energy) and E-d (dispersive energy) have been discussed in terms of the Wemple-DiDomenico single-oscillator model. The values obtained by this method are suitable for many scientific studies and technological applications, such as gas sensors, heat mirrors, transparent electrodes, solar cells and piezoelectric devices.