Paper Title:
Cathodoluminescence Quenching in Yb-Doped ZnO Nanostructures
  Abstract

Cathodoluminescence (CL) quenching was observed in ZnO nanostructures when doped with Yb by both chemical and physical methods. CL spectra of the samples revealed a defect emission at 2.25 eV in samples prepared by the chemical method, and an emission at 2.5 eV in samples prepared by the physical method. From the thermal treatment studies, it was found that oxygen vacancies are responsible for the 2.5 eV emission. Observed CL quenching in ZnO is explained through the participation of point defects in the energy transfer process from ZnO to Yb3+.

  Info
Periodical
Edited by
Guest Editor: Umapada Pal
Pages
177-183
DOI
10.4028/www.scientific.net/JNanoR.5.177
Citation
A. Susarrey-Arce, M. Herrera-Zaldívar, W. de la Cruz, U. Pal, "Cathodoluminescence Quenching in Yb-Doped ZnO Nanostructures", Journal of Nano Research, Vol. 5, pp. 177-183, 2009
Online since
February 2009
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