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Effect of Particle Size on the Luminescent Properties of Europium Doped Yttrium Oxide Nano-Phosphors

Published online by Cambridge University Press:  17 March 2011

Thomas S. Copeland ,
Burtrand I. Lee  and
Amanda K. Elrod
Thomas S. Copeland
Affiliation:
School of Materials Science & Engineering, Clemson Univ. Clemson, SC 29634, USA
Burtrand I. Lee
Affiliation:
School of Materials Science & Engineering, Clemson Univ. Clemson, SC 29634, USA
Amanda K. Elrod
Affiliation:
School of Materials Science & Engineering, Clemson Univ. Clemson, SC 29634, USA
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Abstract

Red light emitting Eu3+ doped Y2O3 phosphor nano-particles were synthesized by a solgel method combined with a furnace firing. The particle size, measured using dynamic light scattering (DLS), was between36nm and 1 micron depending on the conditions. Final dopant concentrations were measured through inductively coupled plasma (ICP). The ICP results show a dopant loss of 58% during the processing for the europium doped yttria. Red photoluminescence (PL) and cathodoluminescence (CL), at 614nm was observed from the phosphor particles under UV excitation and electron bombardment. Results show that the samples with a mean diameter of 30nm displayed a significant increase in PL brightness over the samples whose mean diameter was 215nm. The lag in PL, and CL intensity behind the commercial reference samples is attributed to the significantly lower dopant levels present in the experimental phosphors. Results also indicate that these processing methods and nanophosphors may be a useful alternative to current materials and methods.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 704: Symposium W – Nanoparticulate Materials , 2001 , W3.7.1
Copyright
Copyright © Materials Research Society 2002

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