"

Cookies ussage consent

I agree.

Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.

Optical properties of sprayed Bi2S3 nanocrystalline thin film

M. KHADRAOUI1,* , N. BENRAMDANE1, R. MILOUA1, C. MATHIEU2, A. BOUZIDI1, K. SAHRAOUI1

Affiliation

  1. Laboratoire d’Elaboration et de Caractérisation des Matériaux, département d’électronique, Université Djillali Liabes, BP89, Sidi Bel Abbés 22000. Algeria
  2. Centre de Calcul et de Modélisation de Lens, Université D’Artois, Faculté Jean Perrin, Rue Jean Souvraz, Sp18, 62307 Lens Cedex, France

Abstract

Bismuth Sulfide (Bi2S3) thin film was prepared by spray pyrolysis on glass substrate at 270 °C, by using bismuth chloride (BiCl3) and Thiourea (CS (NH2)2). The optical constants and thickness were extracted using the pattern search optimization technique. The optical constants confirm that the Bi2S3 film has a direct gap of 1.56 eV. The dispersion of refractive index in Bi2S3 was analyzed using the concept of the single oscillator model. The dielectric constants represented by the lattice dielectric, the dispersion parameters E0 and Ed, and the rth moments, M-1 and M-3 were determined. It is interesting to note that Bi2S3 appears to fall into the covalent class. The values ratio of the carrier concentration to effective masse and plasma frequency were also evaluated..

Keywords

Thin film, Optical Constants, Single oscillator model, Bi2S3.

Citation

M. KHADRAOUI, N. BENRAMDANE, R. MILOUA, C. MATHIEU, A. BOUZIDI, K. SAHRAOUI, Optical properties of sprayed Bi2S3 nanocrystalline thin film, Optoelectronics and Advanced Materials - Rapid Communications, 9, 9-10, September-October 2015, pp.1167-1170 (2015).

Submitted at: Jan. 27, 2015

Accepted at: Sept. 9, 2015