Eu-doped B2O3-ZnO-PbO glass phosphor powders with spherical shape and fine size prepared by spray pyrolysis

Seung Kwon Hong, Hye Young Koo, You Na Ko, Jung Hyun Kim, Jang Heui Yi, Yun Chan Kang

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Abstract

Eu-doped B2O3-ZnO-PbO glass phosphor powders with spherical shape and fine size were directly prepared by spray pyrolysis. The glass phosphor powders prepared at a temperature of 1100°C had broad XRD peak at around 28°. One glass phosphor powder was formed from one droplet at the preparation temperature range from 900 to 1100°C. The mean size of the glass phosphor powders was 0.75 μm. The glass transition temperature (T g ) of the glass phosphor powders prepared by spray pyrolysis was 378.5°C. The excitation spectrum of the glass phosphor powders prepared at the optimum preparation temperature of 1100°C had bands at 362, 381, 392, 463, 525, and 532 nm. The glass phosphor powders had emission spectra with bands at 579, 614, and 653 nm. The glass phosphor powders with doping concentration of Eu of 7 wt% had the maximum photoluminescence intensity. The glass phosphor layer formed from the glass phosphor powders had high transparencies above 90%.

Original languageEnglish
Pages (from-to)671-677
Number of pages7
JournalApplied Physics A: Materials Science and Processing
Volume98
Issue number3
DOIs
Publication statusPublished - 2010 Mar 1
Externally publishedYes

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ASJC Scopus subject areas

  • Chemistry(all)
  • Materials Science(all)

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