Preparation of heterogenous copper-titanium oxides for chemiresistor applications

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388980%3A_____%2F20%3A00538506" target="_blank" >RIV/61388980:_____/20:00538506 - isvavai.cz</a>

Alternative codes found

RIV/67985858:_____/20:00538349 RIV/67985882:_____/20:00538349 RIV/61389005:_____/20:00538349

Result on the web

<a href="http://dx.doi.org/10.1016/j.matpr.2020.05.061" target="_blank" >http://dx.doi.org/10.1016/j.matpr.2020.05.061</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.matpr.2020.05.061" target="_blank" >10.1016/j.matpr.2020.05.061</a>

Result language

angličtina

Original language name

Preparation of heterogenous copper-titanium oxides for chemiresistor applications

Original language description

Metal oxide based gas sensors (MOS) found a wide application as modular parts in microelectronic devices due to their technological compatibility, low cost and outstanding sensing capabilities to different chemical species. The functionality of such chemiresistors consists of a change of the electric resistance/impedance of a semiconducting sensitive layer when gases with either oxidizing or reducing properties appear in the surrounding atmosphere. Earlier, the majority of the investigated chemiresistors were based on single phase, homogenous semiconductors. The combination of two different phases and hence the implementation of heterojunctions (HJs) on chemiresistors offers a way to increase the sensor performance, especially the sensitivity of the sensor. In this work, chemiresistors based on CuO-TiO2 acting as p-n heterojunction were developed. Thin sensitive layers were deposited by a two-step process. Cu Ti thin layers were prepared by ion beam sputtering using an Ar ion beam and, subsequently, oxidized by thermal annealing in air at 400 degrees C for 7 h. The stoichiometry of the metallic films was analyzed by the Rutherford Back-scattering (RBS) using 2 MeV alpha-particles. The gas sensing properties of the oxidic thin films (deposited on prefabricated substrates containing interdigital electrodes) were analyzed in an atmosphere containing 100 ppm of either methanol, hydrogen and acetaldehyde or 10.6 ppm of nitrogen dioxide.

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

10402 - Inorganic and nuclear chemistry

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

2020

Confidentiality

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

Article name in the collection

Materials Today: Proceedings

ISBN

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ISSN

2214-7853

e-ISSN

—

Number of pages

5

Pages from-to

"Roč. 33 (2020)"

Publisher name

Elsevier

Place of publication

Amsterdam

Event location

Warsaw

Event date

Sep 16, 2019

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

000599991700018