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High resolution photoemission study on SnO2 gas sensors
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2001 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 391, no 2, 192-197 p.Article in journal (Refereed) Published
Abstract [en]

Pd-, Pt-doped and undoped SnO2 gas sensors were studied by synchrotron radiation photoelectron spectroscopy (SRPES) and laboratory source UPS (ultraviolet photoelectron spectroscopy). Valence band spectra were recorded for photon energies of 60-120 eV (SRPES) and for 40.81 eV (UPS). The spectra were analyzed by factor analysis and generation of difference spectra. A comparison of the samples shows that the doping material of these sensors is not introducing additional states to the surface electronic structure within the limit of detection. This leads to the conclusion that the surfaces of the grains are not enriched with the metal additives.

Place, publisher, year, edition, pages
2001. Vol. 391, no 2, 192-197 p.
Keyword [en]
tin oxide, sensors, photoelectron spectroscopy (PES), resonant-photoemission, doped sno2, sno2(110), pd, conductance, spectra
URN: urn:nbn:se:kth:diva-20782ISI: 000169811300005OAI: diva2:339479
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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Göthelid, Mats
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