Synthesis and characterization of rare-earth doped yttria upconversion nanophosphors

X. Qin, T. Yokomori, Yiguang Ju

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Scopus citations


Rare-earth (Er3+, Ho3+, and Tm3+) doped yttrium oxide upconversion nanophosphors were synthesized using a single-step gas-phase flame synthesis method. The phosphors were characterized by X-ray diffractometry, transmission electron microscopy and fluorescence spectroscopy. The dependence of multi-photon emissions on excitation power was examined. The results show that particle size, morphology and photoluminescence intensity are strongly affected by flame temperature. The as-prepared nanophosphors are mostly single crystallites with an average size less than 30 nm. Under 980 nm laser diode excitation, bright blue, green and red emissions are visible from these phosphors which show potential applications in biological imaging and photodynamic therapy.

Original languageEnglish (US)
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Number of pages8
ISBN (Electronic)9781604238112
StatePublished - 2007
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: Mar 25 2007Mar 28 2007

Publication series

Name5th US Combustion Meeting 2007


Other5th US Combustion Meeting 2007
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering
  • Physical and Theoretical Chemistry
  • Mechanical Engineering


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