Observatorio de I+D+i UPM

Memorias de investigación
Research Publications in journals:
Low-symmetry T-d-distorted Co2+ centres in ceramic ZnO:Co
Year:2010
Research Areas
  • Materials for electric engineering and electronics
Information
Abstract
Abstract: The reflectivity and photoluminescence of cobalt-doped ZnO ceramics samples have been studied by optical spectroscopy. The result reveals, in addition to the emission bands associated with intrinsic defects, weak narrow emission peaks which are ascribed to a mixed T-4(1)(P), T-2(1)(G), E-2(G), (4)A(2)(F) transition between Co(2+)d-levels located in regular Zn2+ sites, [Co2+] Zn and a broad near infrared emission band centred at 710 nm which has been interpreted as belonging to Co2+ ions located in a perturbed Zn2+ site, [Co2+](Zn)(*). This study shows that the annealing treatment at 800 degrees C activates the diffusion of point defects thus creating more [Co2+](Zn) centres. (C) 2010 Published by Elsevier B.V.
International
Si
JCR
Si
Title
CHEMICAL PHYSICS LETTERS
ISBN
0009-2614
Impact factor JCR
2,291
Impact info
Volume
488
10.1016/j.cplett.2010.02.028
Journal number
4-6
From page
173
To page
176
Month
MARZO
Ranking
Participants
  • Autor: Marina Villegas Gracia (UPM)
  • AUTOR: TPJ HANS (Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark Scotland )
  • Autor: Amador Caballero Cuesta (UPM)
  • AUTOR: F JAQUE (Univ Strathclyde, Dept Phys, Glasgow G4 0NG, Lanark Scotland )
  • AUTOR: MARCO PEITEADO (ICV-CSIC )
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Propiedades ópticas, eléctricas y magnéticas de materiales y sus aplicaciones (POEMMA)
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
Cofinanciación del MINECO en el marco del Programa INNCIDE 2011 (OTR-2011-0236)
Cofinanciación del MINECO en el marco del Programa INNPACTO (IPT-020000-2010-22)