The influence of vanadium doping on the electronic structure of SnO2 has been studied by a range of techniques including X-ray and ultraviolet photoemission spectroscopy, as well as IR reflectance and magnetic susceptibility measurements. In contrast to Sb, V does not act as a shallow n-type dopant in SnO2 and V substitution appears to be largely compensated by cation vacancies or oxygen interstitials. However, a state is apparent in ultraviolet photoemission toward the bottom of the bulk bandgap of SnO2. This corresponds to electrons trapped on V-IV ions close to the surface of the doped material. The binding energy of the V-IV state in doped SnO2 is compared with that in V-doped TiO2 and the differences between the two materials are shown to be consistent with a simple dielectric model.

NATURE OF DONOR STATES IN V-DOPED SNO2

GULINO, Antonino;
1995

Abstract

The influence of vanadium doping on the electronic structure of SnO2 has been studied by a range of techniques including X-ray and ultraviolet photoemission spectroscopy, as well as IR reflectance and magnetic susceptibility measurements. In contrast to Sb, V does not act as a shallow n-type dopant in SnO2 and V substitution appears to be largely compensated by cation vacancies or oxygen interstitials. However, a state is apparent in ultraviolet photoemission toward the bottom of the bulk bandgap of SnO2. This corresponds to electrons trapped on V-IV ions close to the surface of the doped material. The binding energy of the V-IV state in doped SnO2 is compared with that in V-doped TiO2 and the differences between the two materials are shown to be consistent with a simple dielectric model.
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/20.500.11769/35157
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 19
social impact