Effect of substrate temperature on some of the optical parameters of CuInS2 films

Aksay S., Altiokka B.

International Conference on Superlattices, Nano-Structures and Nano-Devices, İstanbul, Turkey, 30 July - 04 August 2006, vol.4, pp.585-586 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 4
  • Doi Number: 10.1002/pssc.200673236
  • City: İstanbul
  • Country: Turkey
  • Page Numbers: pp.585-586
  • Anadolu University Affiliated: Yes

Abstract

Polycrystalline CuInS2 films have been grown by spray pyrolysis method at different substrate temperatures, a simple method which can produce low cost and highly absorbing samples. Optical characteristics of the CuInS2 films have been analyzed using spectrophoto meter in the wavelength range of 400-900 nm. The absorption spectra of the films showed that this compound is a direct band gap material and gap values varied between 1.51-1.80 eV, depending on the substrate temperatures. The refractive index n, extinction coefficient k and dielectric constants epsilon(1) and epsilon(2) were also discussed and calculated as a function of wavelength A. (C) 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.