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An Investigation of the Chromaticity of Blue Emitting Yttrium Silicate

Published online by Cambridge University Press:  10 February 2011

E. J. Bosze ,
G. A. Hirata  and
J. Mckittrick
E. J. Bosze
Affiliation:
Department of Applied Mechanics and Engineering Science and Materials Science Program, University of California, San Diego, La Jolla, CA, 92093-0411, [email protected]
G. A. Hirata
Affiliation:
Department of Applied Mechanics and Engineering Science and Materials Science Program, University of California, San Diego, La Jolla, CA, 92093-0411
J. Mckittrick
Affiliation:
Department of Applied Mechanics and Engineering Science and Materials Science Program, University of California, San Diego, La Jolla, CA, 92093-0411
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Abstract

This investigation studied the effects of Ho3+ and Er3+ on the luminescence of the blue emitting phosphor yttrium silicate, (Y1−mCem)2SiO5. Yttrium silicate has a large emission tail that extends into the red portion of the visual spectrum. To improve the chromaticity of this phosphor to give it a more saturated blue color, the emission intensity of the tail needs to be decreased. Photoluminscence and low-voltage cathodoluminescence measurements were performed on yttrium silicate phosphors with varying concentrations of Gd3+, Ho3+ and Er3+. It was found that when co-doping with Ho3+ and Er3+, the relative intensity of the emission tail was decreased, but so to was the overall luminescence intensity of this phosphor.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 558: Symposium B – Flat-Panel Displays and Sensors-Principles, Materials… , 1999 , 15
Copyright
Copyright © Materials Research Society 2000

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References

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