Quantitative Assessment of Surface Loss in Nanocrystalline YBO3:Eu3+ from Measurements of Host-to-Activator Transfer Efficiency

Document Type

Article

Department or Administrative Unit

Chemistry

Publication Date

8-10-2011

Abstract

Host-to-activator energy-transfer efficiencies under vacuum ultraviolet excitation have been calculated for YBO3:Eu3+ with particle sizes of 50–500 nm, using excitation and reflectance spectroscopy. The data were evaluated using published kinetic models in order to estimate the magnitude of energy lost to the surface of the particle as the crystallite size is decreased. The data indicate that surface losses become measurable at particle sizes of about 300 nm, whereas below about 100 nm, approximately 40% of the excitation energy is lost to the particle surface. The data did not allow us to draw any conclusions about the effect of particle size on the bulk transport of electron–hole pairs.

Comments

This article was originally published in The Journal of Physical Chemistry C. 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.

Journal

The Journal of Physical Chemistry C

Rights

Copyright © 2011 American Chemical Society

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