Sodium carbonate flux effects on the luminescence characteristics of (Y0.5Gd0.5)2O3:Eu phosphor particles prepared by spray pyrolysis

Yun Chan Kang, Hyun Sook Roh, Seung Bin Park

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Abstract

Na2CO3 flux was introduced in the preparation of phosphor particles by spray pyrolysis to improve the photoluminescence (PL) characteristics of (Y0.5Gd0.5)2O3:Eu phosphor particles. The phosphor particles directly prepared by spray pyrolysis at 1300 °C from solutions with 20 wt% Na2CO3 flux had the highest PL intensity, which corresponded to 130% of that of particles prepared from solution without flux. On the other hand, the maximum PL intensity of the annealed particles, which were as-prepared at 900 °C and posttreated at 1200 °C for 3 h, was obtained from a solution with 5 wt% Na2CO3 flux. The maximum PL intensity of particles directly prepared by spray pyrolysis without posttreatment was 86% of that of posttreated phosphor particles. Na2CO3 flux was also important in control of morphology of (Y0.5Gd0.5)2O3:Eu phosphor particles.

Original languageEnglish
Pages (from-to)447-449
Number of pages3
JournalJournal of the American Ceramic Society
Volume84
Issue number2
Publication statusPublished - 2001 Feb 1
Externally publishedYes

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ASJC Scopus subject areas

  • Ceramics and Composites

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