Eu3+:Y2O3 microspheres and microcubes: A supercritical synthesis and characterization

M. Kempaiah Devaraju, Shu Yin, Tsugio Sato

Research output: Contribution to journalArticlepeer-review

39 Citations (Scopus)


A new approach that uses mixed supercritical solvents of water/1-propanol and water/methanol (400 °C, 40 MPa) to prepare morphology-controlled precursor materials in a very short reaction time, such as 10 min, followed by calcinations has been developed to form Eu3+:Y2O 3 microspheres of 2-3 μm in diameter or microcubes of 2-3 μm in side length, respectively. Eu3+:Y2O3 microspheres and microcubes exhibited strong red emission at 610 nm corresponding to 5D07F2 transition. The highest photoluminescence emission was obtained for the microspheres after calcination at 1000 °C for 1 h in air.

Original languageEnglish
Pages (from-to)4698-4704
Number of pages7
JournalInorganic Chemistry
Issue number11
Publication statusPublished - 2011 Jun 6


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