Photoelectrochemical and blocking properties of titania layers prepared by spray pyrolysis

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F17%3A43915162" target="_blank" >RIV/60461373:22310/17:43915162 - isvavai.cz</a>

Result on the web

<a href="http://www.icct.cz/AngiologyKlon-ICCT/media/system/ICCT2017-full_papers.pdf" target="_blank" >http://www.icct.cz/AngiologyKlon-ICCT/media/system/ICCT2017-full_papers.pdf</a>

DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Photoelectrochemical and blocking properties of titania layers prepared by spray pyrolysis

Original language description

For the proper function of the solar cells, a nonporous blocking film of TiO2 has to be deposited on the surface of FTO glass substrate. Such blocking film is then able to minimise an undesired parasitic process, e. g. back reaction of photoinjected electrons with the oxidized form of mediator or with the hole-transporting medium. In the present work thin transparent blocking TiO2 films were prepared by spray pyrolysis. The various layer thicknesses of sprayed films were achieved by the varying number of sprayed cycles. The investigated parameters were deposition temperature (150 - 450 °C), number of spraying cycles and subsequent calcination at 500 °C. The photoelectrochemical properties were evaluated in an inert aqueous electrolyte under UV irradiation. The blocking properties were tested by cyclic voltammmetry with a model redox probe with simple one-electron-transfer reaction. It can be concluded that the deposition temperature 450 °C is necessary for the fabrication of photoactive TiO2 films. Blocking properties were negatively influenced by post calcination at 500 °C, this negative influence can be partly compensated by an increase of number of spraying cycles, e. g. by an increase in layer thickness.

Czech name

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Czech description

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Type

D - Article in proceedings

CEP classification

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OECD FORD branch

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

Project

<a href="/en/project/GA17-20008S" target="_blank" >GA17-20008S: Novel photocathode and photoanode materials for solar water splitting</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2017

Confidentiality

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

Article name in the collection

Proceedings of the 5th International Conference on Chemical Technology

ISBN

978-80-86238-65-4

ISSN

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e-ISSN

2336-8128

Number of pages

5

Pages from-to

225-229

Publisher name

Česká společnost průmyslové chemie (ČSPCH)

Place of publication

Praha

Event location

Mikulov

Event date

Apr 10, 2017

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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