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Photocatalytic and electrically conductive transparent Cl-doped ZnO thin films: Via aerosol-assisted chemical vapour deposition

Jiamprasertboon, A; Powell, MJ; Dixon, SC; Quesada-Cabrera, R; Alotaibi, AM; Lu, Y; Zhuang, A; ... Carmalt, CJ; + view all (2018) Photocatalytic and electrically conductive transparent Cl-doped ZnO thin films: Via aerosol-assisted chemical vapour deposition. Journal of Materials Chemistry A , 6 (26) pp. 12682-12692. 10.1039/c8ta01420e. Green open access

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Abstract

A simple, economical and effective solution-based chemical vapour deposition (CVD) technique, aerosol-assisted CVD, has been successfully applied to produce inexpensive Cl-doped ZnO films using Zn acetate dihydrate and FeCl3. X-ray photoelectron spectroscopy and the increase in cell parameters from powder X-ray diffraction determined that Cl had been doped into the wurtzite ZnO lattice. The Cl-doping had a significant effect on the morphology of the thin films synthesised and resulted in an improvement in the visible light transmission and lower electrical resistance (typical resistivities of doped films ∼10−2 Ω cm). The highest transmittance (% T) of 85% was obtained when 7 mol% FeCl3 was used in the precursor solution and the lowest resistivity of 4.28 ± 0.41 × 10−2 Ω cm was obtained with 5 mol% FeCl3. The greatest photocatalytic activity of stearic acid degradation under UVA irradiation was obtained on using 10 mol% FeCl3, resulting in the highest formal quantum efficiency (FQE) of 3.0 ± 0.1 × 10−4 molecule per photon. These films, therefore, display transparent conducting oxide and photocatalytic properties, giving multifunctional characteristics and promising applications.

Type: Article
Title: Photocatalytic and electrically conductive transparent Cl-doped ZnO thin films: Via aerosol-assisted chemical vapour deposition
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c8ta01420e
Publisher version: http://doi.org/10.1039/c8ta01420e
Language: English
Additional information: This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Chemistry
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > MAPS Faculty Office
URI: http://discovery.ucl.ac.uk/id/eprint/10052720
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