Issue 32, 2023, Issue in Progress

Annealing effect on the physical properties of TiO2 thin films deposited by spray pyrolysis

Abstract

Titanium dioxide (TiO2) thin films were deposited on glass substrates at 350 °C using the spray pyrolysis technique. As deposited and annealed thin films were characterized by X-ray diffraction, scanning electron microscopy, UV-VIS spectroscopy, and photodetection. Unlike the as deposited samples which were amorphous, annealed samples show an anatase phase. Films were absorbent in the UV region and the band gap energy decreases from 3.78 eV to 3.4 eV with annealing. The photoresponse of TiO2 photodetectors was recorded under UV (λ1 = 365 nm, λ2 = 254 nm) and visible light illumination by reversible switching (ON/OFF) cycles using DC electrical characterization. Photosensitive properties such as reproducible photosensitivity, responsivity, and detectivity were also studied.

Graphical abstract: Annealing effect on the physical properties of TiO2 thin films deposited by spray pyrolysis

Article information

Article type
Paper
Submitted
11 Apr 2023
Accepted
27 Jun 2023
First published
19 Jul 2023
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2023,13, 21852-21860

Annealing effect on the physical properties of TiO2 thin films deposited by spray pyrolysis

Y. Alaya, R. Souissi, M. Toumi, M. Madani, L. El Mir, N. Bouguila and S. Alaya, RSC Adv., 2023, 13, 21852 DOI: 10.1039/D3RA02387G

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