Measurement of host-to-activator transfer efficiency in nano-crystalline Y2O3:Eu3+ under VUV excitation

Department or Administrative Unit

Chemistry

Document Type

Article

Author Copyright

Copyright © 2012 Elsevier Inc. All rights reserved.

Publication Date

2-2013

Journal

Journal of Solid State Chemistry

Abstract

We have conducted a systematic study of the excitation and reflectance spectra of nano-crystalline Y2O3:Eu prepared by combustion synthesis. Excitation through the host lattice becomes relatively more efficient as the firing temperature of the precursor is increased, while reflectance properties remain essentially unchanged. Using these data, host-to-activator transfer efficiencies were calculated for excitation at the band edge of Y2O3, and evaluated using a competition kinetics model. From this analysis we conclude that the relatively low luminous efficiency of these materials is due more to poor bulk crystallinity than to surface loss effects.

Comments

This article was originally published in Journal of Solid State Chemistry. The full-text article from the publisher can be found here.

Due to copyright restrictions, this article is not available for free download from ScholarWorks @ CWU.

Link to Full Text
Contact Author

Share

COinS