Green coloration of Co-doped ZnO explained from structural refinement and bond considerations
Idioma
en
Article de revue
Este ítem está publicado en
Inorganic Chemistry. 2007, vol. 46, n° 26, p. 10996-11002
American Chemical Society
Resumen en inglés
ZnO doped with Co2+ has been prepared by a Pechini process and investigated in terms of crystallographic structure and UV-visible properties. We emphasize for the first time a splitting of the ZnO band gap in two "sub-band ...Leer más >
ZnO doped with Co2+ has been prepared by a Pechini process and investigated in terms of crystallographic structure and UV-visible properties. We emphasize for the first time a splitting of the ZnO band gap in two "sub-band gaps" (never clearly mentioned until now) which is fully interpreted basing on the iono-covalent nature of the O-Zn bonds. An anticipative approach of the potential structure relaxations was discussed from exchanged effective charge per bond calculated with the purely ionic Brown and Altermatt model.< Leer menos
Palabras clave en inglés
Electric charge
Color
UV and visible spectra
Bond length
Band gap
Zinc oxide
Cobalt(2+)
Orígen
Importado de HalCentros de investigación