Investigation of the effects of process variables on the properties of europium-doped yttrium-oxide phosphor

Joseph A. Cooper*, Henry G. Paris, Stuart R. Stock, Sen Yang, Christopher J. Summers, David N. Hill

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The goal of this work is to synthesize Y2O3:Eu+3 of small size and high luminous efficiency using the oxalate co-precipitation process. We find that pH, solution temperature, and calcining temperature determine particle size and morphology. Particles with the smallest mean diameter form at a pH of 4, solution temperature of 22°C, and a calcining temperature of 1000°C. Cubic and plate-let/rod-shaped particles precipitate at a high pH and irregularly shaped particles at a low pH. Powders with 2-3 mol% Eu produce the most efficient luminescence. Efficiency increases with calcining temperate as does mean crystallite size.

Original languageEnglish (US)
Pages (from-to)163-166
Number of pages4
JournalJournal of the Society for Information Display
Volume6
Issue number3
DOIs
StatePublished - 1998

Keywords

  • FED phosphors
  • Field-emission displays
  • Phosphor morphology
  • Phosphor synthesis

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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