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

被引：15

作者：

Alaya, Y. ^{[1
]}

Souissi, R. ^{[2
]}

Toumi, M. ^{[1
]}

Madani, M. ^{[1
]}

El Mir, L. ^{[1
]}

Bouguila, N. ^{[1
]}

Alaya, S. ^{[1
]}

机构：

[1] Gabes Univ, Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Gabes 6072, Tunisia

[2] Carthage Univ, Lab Mat Mol & Applicat IPEST, BP 51, Tunis 2070, Tunisia

来源：

RSC ADVANCES | 2023年 / 13卷 / 32期

关键词：

HIGH-PERFORMANCE; PHOTODETECTORS; OXIDE; HETEROSTRUCTURE; DETECTOR; ARRAY;

D O I：

10.1039/d3ra02387g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Titanium dioxide (TiO2) thin films were deposited on glass substrates at 350 & DEG;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 (& lambda;(1) = 365 nm, & lambda;(2) = 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.

引用

页码：21852 / 21860

页数：9

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