Diffuse reflectance spectroscopy in the UV-vis-NIR is employed to study the electronic transitions in MoO3-WO3 mixed oxide. The spectroscopic results were then related to the temp. profile of the surface barrier. The electronic absorptions appear to increase after reducing treatments and to decrease after oxidn. This variation of oxygen-related defects changes the doping level, which in turn, affects the dependence of surface barrier on temp. The latter is strictly connected to the sensing properties of the mixed oxide.

Surface barrier modulation and diffuse reflectance spectroscopy of MoO3-WO3 thick films

MALAGU', Cesare;CAROTTA, Maria Cristina;GHERARDI, Sandro;GIBERTI, Alessio;MARTINELLI, Giuliano
2006

Abstract

Diffuse reflectance spectroscopy in the UV-vis-NIR is employed to study the electronic transitions in MoO3-WO3 mixed oxide. The spectroscopic results were then related to the temp. profile of the surface barrier. The electronic absorptions appear to increase after reducing treatments and to decrease after oxidn. This variation of oxygen-related defects changes the doping level, which in turn, affects the dependence of surface barrier on temp. The latter is strictly connected to the sensing properties of the mixed oxide.
Malagu', Cesare; Carotta, Maria Cristina; Morandi, S.; Gherardi, Sandro; Ghiotti, G.; Giberti, Alessio; Martinelli, Giuliano
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11392/522833
 Attenzione

Attenzione! I dati visualizzati non sono stati sottoposti a validazione da parte dell'ateneo

Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 3
social impact