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Low-Voltage Cathodoluminescent Properties of Blue-Emitting Yttrium Silicates Doped With Cerium

Published online by Cambridge University Press:  10 February 2011

E. J. Bosze ,
G. A. Hirata ,
J. Mckittrick  and
L. E. Shea
E. J. Bosze
Affiliation:
Department of Applied Mechanics and Engineering Sciences and Materials Science Program, University of California at San Diego, La Jolla, CA, 92093-0418, ebosze@ucsd.edu
G. A. Hirata
Affiliation:
Department of Applied Mechanics and Engineering Sciences and Materials Science Program, University of California at San Diego, La Jolla, CA, 92093-0418, ebosze@ucsd.edu
J. Mckittrick
Affiliation:
Department of Applied Mechanics and Engineering Sciences and Materials Science Program, University of California at San Diego, La Jolla, CA, 92093-0418, ebosze@ucsd.edu
L. E. Shea
Affiliation:
Sandia National Laboratory, Albuquerque, NM 87185
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Abstract

Yttrium silicate activated with Ce3+, (Y1−xCex)2SiO5, has been found to be an efficient phosphor that can potentially be used as the blue-emitting component in field emission flat panel displays. This highly refractory powder can be synthesized by combustion synthesis, a low cost technique used to fabricate multicomponent oxide powders in a single step process. The effect of activator concentration and post-synthesis annealing was examined on the fluorescent properties. The powders were found to be monoclinic space group P21/c in the as-synthesized state, and transformed to monoclinic space group C2/c after annealing. The maximum luminous emission intensity was reached after a one hour anneal at 1350°C for x=0.0075, with the peak Ce3+ emission wavelength between 420 and 450 nm. When co-doped with Gd3+, no increase in the emission intensity was observed.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 508: Symposium B – Flat Panel Display Materials - 1998 , January 1998 , 269
Copyright
Copyright © Materials Research Society 1998

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