The paper reports and comments the results of several electron spin resonance investigations, performed on semiconductor oxides for gas sensing. The main aspects, related to the comparison between spectroscopic and electric data, are concerning on (i) the role of the oxide defects in interacting with the gas atmosphere; (ii) the origin of the sensing enhancement, which follows the doping of the oxide by transition metal ions; and (iii) the effects of different particle morphology and of the controlled particle shape on the sensing functionality. The electron spin resonance results have been associated, when possible, to those deriving from X-ray photoelectron spectroscopy, in order to investigate the electronic configuration of the transition metal centers. Special emphasis has been deserved to the oxide synthesis procedures, in several cases well related to the electrical response. The data have been drawn from several studies, performed in different time periods, and have been compared to suggest a possible common interpretation of the sensing mechanism, based on either electronic or morphological properties.

D'Arienzo, M., Morazzoni, F., Ruffo, R., Scotti, R. (2021). Using the electron spin resonance to detect the functional centers in materials for sensor devices. IONICS, 27(5), 1839-1851 [10.1007/s11581-021-03996-0].

Using the electron spin resonance to detect the functional centers in materials for sensor devices

D'Arienzo M.;Morazzoni F.
;
Ruffo R.;Scotti R.
Membro del Collaboration Group
2021

Abstract

The paper reports and comments the results of several electron spin resonance investigations, performed on semiconductor oxides for gas sensing. The main aspects, related to the comparison between spectroscopic and electric data, are concerning on (i) the role of the oxide defects in interacting with the gas atmosphere; (ii) the origin of the sensing enhancement, which follows the doping of the oxide by transition metal ions; and (iii) the effects of different particle morphology and of the controlled particle shape on the sensing functionality. The electron spin resonance results have been associated, when possible, to those deriving from X-ray photoelectron spectroscopy, in order to investigate the electronic configuration of the transition metal centers. Special emphasis has been deserved to the oxide synthesis procedures, in several cases well related to the electrical response. The data have been drawn from several studies, performed in different time periods, and have been compared to suggest a possible common interpretation of the sensing mechanism, based on either electronic or morphological properties.
Articolo in rivista - Articolo scientifico
Electron spin resonance; Sensor devices; SnO2; WO3; ZnO;
English
17-mar-2021
2021
27
5
1839
1851
open
D'Arienzo, M., Morazzoni, F., Ruffo, R., Scotti, R. (2021). Using the electron spin resonance to detect the functional centers in materials for sensor devices. IONICS, 27(5), 1839-1851 [10.1007/s11581-021-03996-0].
File in questo prodotto:
File Dimensione Formato  
10281-354402_VoR.pdf

accesso aperto

Tipologia di allegato: Publisher’s Version (Version of Record, VoR)
Licenza: Creative Commons
Dimensione 1.87 MB
Formato Adobe PDF
1.87 MB Adobe PDF Visualizza/Apri

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: https://hdl.handle.net/10281/354402
Citazioni
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
Social impact