WO3 Photoanodes for Photoelectrochemical Applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388955%3A_____%2F25%3A00618301" target="_blank" >RIV/61388955:_____/25:00618301 - isvavai.cz</a>

Alternative codes found

RIV/60461373:22310/25:43931430

Result on the web

<a href="https://hdl.handle.net/11104/0365156" target="_blank" >https://hdl.handle.net/11104/0365156</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.70322/prp.2025.10006" target="_blank" >10.70322/prp.2025.10006</a>

Result language

angličtina

Original language name

WO3 Photoanodes for Photoelectrochemical Applications

Original language description

ABSTRACT: WO3 layers were prepared by spray pyrolysis of a peroxotungstic acid solution on FTO/glass substrates. Investigated parameters were layer thickness and influence of post-annealing in air. Films deposited at 250 °C were amorphous. Post-annealing at 550 °C for 2 h resulted in the formation of monoclinic crystalline structure. A comprehensive account of electrochemical efficiency in terms of IPCE for WO3 films as a function of the three parameters (wavelength, thickness and direction of light incidence) fully characterizing the photoelectrodes is presented here for the first time. The highest improvement in crystallinity and also the highest photocurrent response was found for WO3 layers deposited at 250 °C and post-annealed at 550 °C, namely 1.9 mA/cm2 (in 0.1 M HClO4 at 1.6 V vs. Ag/AgCl) under irradiation with a solar simulator (AM 1.5, 100 mW/cm2) and IPCE = 0.5 at 369 nm (front side irradiation), which is comparable with values obtained by other deposition techniques (e.g., hydrothermal or sol gel). Spray pyrolysis as a method of fabricating WO3 electrodes has the advantage of being able to produce large electrodes for use in practical applications.

Czech name

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Czech description

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Type

J_ost - Miscellaneous article in a specialist periodical

CEP classification

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OECD FORD branch

10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2025

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Photocatalysis: Research and Potential

ISSN

2958-8774

e-ISSN

2958-8782

Volume of the periodical

2

Issue of the periodical within the volume

2

Country of publishing house

CN - CHINA

Number of pages

8

Pages from-to

10006

UT code for WoS article

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EID of the result in the Scopus database

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