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Phosphor Synthesis Routes and their Effect on the Performance of Garnet Phosphors At Low-Voltages

Published online by Cambridge University Press:  10 February 2011

L. E. Shea ,
J. McKittrick  and
M. L. F. Phillips
L. E. Shea
Affiliation:
Department of Applied Mechanics & Engineering Sciences and Materials Science Program, University of California, San Diego, La Jolla, CA 92093-0411
J. McKittrick
Affiliation:
Department of Applied Mechanics & Engineering Sciences and Materials Science Program, University of California, San Diego, La Jolla, CA 92093-0411
M. L. F. Phillips
Affiliation:
Sandia National Laboratories, Albuquerque, NM 87185
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Abstract

Garnet phosphors have potential for use in field emission displays (FEDs). Greenemitting Gd3Ga5O12:Tb (GGG:Tb) and Y3A15012:Tb (YAG:Tb) are possible alternatives to ZnO:Zn, because of their excellent resistance to burn, low-voltage efficiency, (3.5 Im/W from GGG:Tb at 800 V), and saturation resistance at high power densities. Hydrothermal and combustion synthesis techniques were employed to improve the low-voltage efficiency of YAG:Tb, and Y3Ga5O12:Tb (YGG:Tb). Synthetic technique did not affect low-voltage (100–1000 V) efficiency, but affected the particle size, morphology, and burn resistance. The small particle size phosphors obtained via hydrothermal (<1 µm) and combustion reactions (<1 µm) would benefit projection TV, high-definition TV (HDTV), and heads-up displays (HUDs), where smaller pixel sizes are required for high resolution.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 424: Symposium H – Flat Panel Display Materials II , 1996 , 409
Copyright
Copyright © Materials Research Society 1997

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