Tco’s Thin Films Grown By Spray Pyrolysis Technique For Window Layer Of Solar Cell Application: A Comparative Study

Authors

M. N. Amroun, Laboratoire d’Elaboration et de Caractérisation des Matériaux, département d’électronique, Université Djilali Liabes, BP89, Sidi Bel Abbés 22000. AlgeriaFollow
K. Salim, Laboratoire d’Elaboration et de Caractérisation des Matériaux, département d’électronique, Université Djilali Liabes, BP89, Sidi Bel Abbés 22000. AlgeriaFollow
A. H. Kacha, Laboratoire de Micro-électronique Appliquée, Université Djillali Liabès de Sidi Bel Abbès, 22000 Sidi Bel Abbès, Algeria.Follow
M. Khadraoui, Laboratoire d’Elaboration et de Caractérisation des Matériaux, département d’électronique, Université Djilali Liabes, BP89, Sidi Bel Abbés 22000. AlgeriaFollow

Abstract

Thin films of ZnO, SnO2 and CdO have been deposited using spray pyrolysis technique. They were characterized by X-Ray diffraction (XRD), optical absorption in the wavelength range 200-2500 nm and Hall Effect measurements. A comparative study was conducted for the prepared TCO’s thin films. The structural studies revealed the formation of polycrystalline thin films with a hexagonal wurtzite and tetragonal rutile structure for ZnO and SnO2 thin films respectively, whereas a cubic structure was found for the CdO films. Optical studies showed that the prepared SnO2, ZnO and CdO thin films had a direct band gap of 3.72, 2.98 and 2.43 eV, respectively. The ZnO films exhibited highest optical transmittance that varied between 70% - 88%. The film thickness of the samples was estimated from transmission spectra. The effective mass of the carriers (m*) at the Fermi level and the figure of merit of the deposited films are also investigated. Hall Effect measurements confirm the n-type nature of the TCO’s thin films. A low resistivity in the order of 10-2 (Ω.cm) has been observed for SnO2 and CdO thin films.

Recommended Citation

N. Amroun, M.; Salim, K.; H. Kacha, A.; and Khadraoui, M. (2020) "Tco’s Thin Films Grown By Spray Pyrolysis Technique For Window Layer Of Solar Cell Application: A Comparative Study," International Journal of Thin Film Science and Technology: Vol. 9 : Iss. 2 , PP -.
Available at: https://digitalcommons.aaru.edu.jo/ijtfst/vol9/iss2/3