Investigation of the effect of aluminum doped zinc oxide (ZnOAl) thin films by spray pyrolysis

Khalid Dakhsi (1) , Bouchaib Hartiti (1) , Samira Elfarrass (1) , Hervé Tchognia (1) , Mohamed Ebn Touhami (2) , Philippe Thevenin (3)

1 MAC & PM Laboratory, ANEPMAER Group, FSTM
2 LMEE
3 LMOPS - Laboratoire Matériaux Optiques, Photonique et Systèmes

In this study, aluminum doped zinc oxide thin films were deposited on ordinary glass substrates at the temperature of 425°C by spray pyrolysis technique for various doping concentrations of aluminum ranging from 1 to 5 at.%. The effect of dopant concentration on structural, morphological and optical properties of ZnOAl thin films was studied. Optical band gap of the films increased with doping percentage and started to decrease from 2 at.% of dopant. The average transmittance for 2at.% ZnOAl film is significantly increased over 90% in the visible region at 450 nm which is crucial for optoelectronic applications. © 2016 Taylor and Francis Group, LLC.

Keywords: Energy gap; Optoelectronic applications; Glass substrates; ZnOAl thin films; Aluminum; Doping (additives); Optical properties; Aluminum coatings; Optical films; Spray-pyrolysis techniques; Aluminum doped zinc oxides (ZnOAl); Zinc oxide; Aluminum-doped zinc oxide thin films; Effect of dopants; Doping concentration; Pyrolysis; Oxide films; Zinc; Substrates; Thin films; Spray pyrolysis; Semiconductor doping

Domains: Engineering Sciences [physics]

Khalid Dakhsi, Bouchaib Hartiti, Samira Elfarrass, Hervé Tchognia, Mohamed Ebn Touhami, et al.. Investigation of the effect of aluminum doped zinc oxide (ZnOAl) thin films by spray pyrolysis. Molecular Crystals and Liquid Crystals, 2016, 627 (1), pp.133-140. ⟨10.1080/15421406.2015.1137134⟩. ⟨hal-02434083⟩