CRACK-FREE AND THICKNESS-CONTROLLABLE DEPOSITION OF TIO2–RGO THIN FILMS FOR SOLAR HARNESSING DEVICES
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Date
2022
Authors
Khamkhash, Laura
Em, Svetlana
Molkenova, Anara
Hwang, Yoon-Hwae
Atabaev, Timur Sh.
Journal Title
Journal ISSN
Volume Title
Publisher
Coatings
Abstract
The use of thin films consisting of TiO2 and reduced graphene oxide (TiO2–rGO) in solar
harnessing devices is gaining momentum thanks to improved charge-transporting characteristics.
In this report, we propose a facile spin-coating methodology for the deposition of crack-free and
thickness-controllable TiO2–rGO thin films. A range of characterization techniques were utilized
to confirm the formation of the TiO2–rGO thin film. Improved charge-transporting properties of
TiO2–rGO composite thin films were confirmed by measuring their photoelectrochemical (PEC)
activity under simulated solar light illumination. In particular, it was found that the TiO2–rGO
composite thin film yielded a better photocurrent response (~151.3 µA/cm2
) than the bare TiO2
thin
film (~71.6 µA/cm2
) at 1.23 eV vs. the reversible hydrogen electrode (RHE). The obtained results
suggested that rGO addition remarkably improves the charge-transporting properties in TiO2 films.
Description
Keywords
Type of access: Open Access, TiO2–rGO, thin films, spin-coating, improved charge-transporting, PEC activity
Citation
Khamkhash, L., Em, S., Molkenova, A., Hwang, Y. H., & Atabaev, T. S. (2022). Crack-Free and Thickness-Controllable Deposition of TiO2–rGO Thin Films for Solar Harnessing Devices. Coatings, 12(2), 218. https://doi.org/10.3390/coatings12020218