Preparation of Eu-doped Y2O3 luminescent nanoparticles in nonionic reverse microemulsions

Myung Han Lee, Seong Geun Oh, Sung Chul Yi

Research output: Contribution to journalArticle

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In this study, Y2O3: Eu luminescent nanoparticles were prepared by precipitation of aqueous yttrium nitrate/europium nitrate solution using ammonium hydroxide in the reverse microemulsions based on polyoxyethylene (5) nonylphenyl ether/polyoxyethylene (9) nonylphenyl ether, cyclohexane, and water. With Eu-doped Y2O3 nanoparticles obtained, particle size, shape, chemical composition, crystalline formation rate, crystallinity, and photoluminescence were measured and compared with those of particles formed by a bulk precipitation method. The nanoparticles synthesized in microemulsion showed a narrow size distribution, spherical shape, fast crystalline formation rate, high crystallinity, and strong photoluminescence. This stronger photoluminescence of particles formed in a microemulsion might be attributed to more densely packed particles with very few voids and higher crystallinity at a relatively low temperature than those synthesized through a bulk precipitation method. (C) 2000 Academic Press.

Original languageEnglish
Pages (from-to)65-70
Number of pages6
JournalJournal of Colloid and Interface Science
Issue number1
StatePublished - 2000 Jun 1


  • Crystallinity
  • Microemulsion
  • Nanoparticle
  • Photoluminescence
  • YO: Eu

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