Structural, optical and photoluminescence properties of Al doped ZnO thin films by spray pyrolysis

Author

Bahedi, K. ; Addou, M. ; El Jouad, M. ; Sofiani, Z. ; Bayoud, S. ; El Haouti, M. ; Ebothé, J.

Author_Institution

Lab. Optoelectron. et Physico-chimie des Mater., Univ. Ibn Tofail, Kenitra, Morocco

fYear

2009

fDate

10-12 Dec. 2009

Firstpage

1

Lastpage

4

Abstract

Undoped and aluminium doped zinc oxide thin films were deposited by the spray pyrolysis technique onto the glass substrates at 450Â°C using a precursor solution consisting of zinc chloride (AlCl₃). The structural, optical and photoluminescence properties of these films were investigated as a function of Al concentration (0, 3, 5, 7 and 10 at %). The films showed a hexagonal wurtzite structure and high preferential orientation in the (0 0 2) crystallographic direction. The optical transmittance spectra showed transmittance higher than 80% in the visible region. The Al doping has improved the crystallinity and the luminescence in the visible region.

Keywords

II-VI semiconductors; aluminium; photoluminescence; pyrolysis; semiconductor doping; semiconductor growth; semiconductor thin films; spray coating techniques; texture; wide band gap semiconductors; zinc compounds; (0 0 2) crystallographic direction; SiO₂; ZnO:Al; crystallinity; doping; hexagonal wurtzite structure; optical properties; optical transmittance spectra; photoluminescence; preferential orientation; spray pyrolysis; structural properties; temperature 450 degC; thin films; Aluminum; Crystallization; Crystallography; Doping; Glass; Optical films; Photoluminescence; Spraying; Sputtering; Zinc oxide; Al; ZnO; photoluminescence; spray pyrolysis; thin films;

fLanguage

English

Publisher

ieee

Conference_Titel

ICTON Mediterranean Winter Conference,2009. ICTON-MW 2009. 3rd

Conference_Location

Angers

Print_ISBN

978-1-4244-5745-8

Electronic_ISBN

978-1-4244-5746-5

Type

conf

DOI

10.1109/ICTONMW.2009.5385535

Filename

5385535