Thin SnOx films for surface plasmon resonance enhanced ellipsometric gas sensing (SPREE)
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F44555601%3A13440%2F17%3A43892832" target="_blank" >RIV/44555601:13440/17:43892832 - isvavai.cz</a>
Result on the web
<a href="https://www.beilstein-journals.org/bjnano/articles/8/56" target="_blank" >https://www.beilstein-journals.org/bjnano/articles/8/56</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3762/bjnano.8.56" target="_blank" >10.3762/bjnano.8.56</a>
Alternative languages
Result language
angličtina
Original language name
Thin SnOx films for surface plasmon resonance enhanced ellipsometric gas sensing (SPREE)
Original language description
Background: Gas sensors are very important in several fields like gas monitoring, safety and environmental applications. In this approach, a new gas sensing concept is investigated which combines the powerful adsorption probability of metal oxide conductive sensors (MOS) with an optical ellipsometric readout. This concept shows promising results to solve the problems of cross sensitivity of the MOS concept. Results: Undoped tin oxide (SnOx) and iron doped tin oxide (Fe:SnOx) thin add-on films were prepared by magnetron sputtering on the top of the actual surface plasmon resonance (SPR) sensing gold layer. The films were tested for their sensitivity to several gas species in the surface plasmon resonance enhanced (SPREE) gas measurement. It was found that the undoped tin oxide (SnOx) shows higher sensitivities to propane (C3H8) then to carbon monoxide (CO). By using Fe:SnOx, this relation is inverted. This behavior was explained by a change of the amount of binding sites for CO in the layer due to this iron doping. For hydrogen (H2) no such relation was found but the sensing ability was identical for both layer materials. This observation was related to a different sensing mechanism for H2 which is driven by the diffusion into the layer instead of adsorption on the surface. Conclusion: The gas sensing selectivity can be enhanced by tuning the properties of the thin film overcoating. A relation of the binding sites in the doped and undoped SnOx films and the gas sensing abilities for CO and C3H8 was found. This could open the path for optimized gas sensing devices with different coated SPREE sensors.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Result continuities
Project
<a href="/en/project/LM2015073" target="_blank" >LM2015073: Nanomaterials and Nanotechnologies for Environment Protection and Sustainable Future</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Beilstein Journal Nanotechnology
ISSN
2190-4286
e-ISSN
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Volume of the periodical
2017
Issue of the periodical within the volume
8
Country of publishing house
DE - GERMANY
Number of pages
8
Pages from-to
522-529
UT code for WoS article
000396264300001
EID of the result in the Scopus database
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