Synthesis of luminescent YVO 4: Eu 3+ submicrometer crystals through hydrogels as directing agents

Yan Li, Yuhui Zheng, Qianming Wang, Chengcheng Zhang

Research output: Contribution to journalArticle

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Abstract

The innovative hydrogel template (polyacrylamide or polyacrylic acid) directed synthesis of YVO 4:Eu 3+ phosphor in a controlled manner was thoroughly studied. Photoluminescence spectra show the europium(III)-doped yttrium orthovanadate could exhibit strong red emissions within the soft matrix (polyacrylamide) and remain relatively stable even when the temperature reached nearly 100°C. After calcination process, X-ray powder diffraction patterns, SEM and DLS measurements implied that the sample was in agreement with pure tetragonal phase and the particle sizes were in the range of 100-200 nm. More importantly, YVO 4:Eu 3+ products prepared based on hydrogels have remarkable improvement in emission intensities compared to phosphors synthesized by conventional approach. Similar results of overall quantum efficiency also support that YVO 4:Eu 3+ assembled by PAM hydrogel (1.94%) is better than the routine way (0.91%).

Original languageEnglish (US)
Pages (from-to)451-456
Number of pages6
JournalMaterials Chemistry and Physics
Volume135
Issue number2-3
DOIs
Publication statusPublished - Aug 15 2012

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Keywords

  • Europium (III)
  • Hydrogel
  • Luminescence
  • YVO

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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