Direct in situ spectroscopic evidence of the crucial role played by surface oxygen vacancies in the O2-sensing mechanism of SnO2-Reference-Cited by-同舟云学术

Direct in situ spectroscopic evidence of the crucial role played by surface oxygen vacancies in the O₂-sensing mechanism of SnO₂

Published:2022 Issue:20 Volume:13 Page:6089-6097
ISSN:2041-6520
Container-title:Chemical Science
language:en
Short-container-title:Chem. Sci.

Author:

Kucharski Stefan¹²,Ferrer Pilar³^ORCID,Venturini Federica³,Held Georg³^ORCID,Walton Alex S.⁴⁵^ORCID,Byrne Conor⁴⁵,Covington James A.⁶,Ayyala Sai Kiran⁶,Beale Andrew M.¹²^ORCID,Blackman Chris¹^ORCID

Affiliation:

1. Department of Chemistry, University College London, 20 Gower St, WC1H 0AJ, London, UK

2. Research Complex at Harwell, Rutherford Appleton Laboratory, OX11 0FA, Harwell, Didcot, UK

3. Diamond Light Source, Rutherford Appleton Laboratory, OX11 0FA, Harwell, Didcot, UK

4. Department of Chemistry, University of Manchester, M13 9PL, Manchester, UK

5. Photon Science Institute, University of Manchester, M13 9PL, Manchester, UK

6. School of Engineering, University of Warwick, CV4 7AL, Coventry, UK

Abstract

NAP-XPS characterisation of SnO2 under operando conditions shows that resistance change, band bending and surface O-vacancy concentration are correlated with ambient O2 concentration, challenging current preconceptions of gas sensor function.

Funder

Engineering and Physical Sciences Research Council

Diamond Light Source

Publisher

Royal Society of Chemistry (RSC)

Subject

General Chemistry

Link

http://pubs.rsc.org/en/content/articlepdf/2022/SC/D2SC01738E

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1. Metal oxide-based gas sensor research: How to?

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