Synthesis and characterization of rare-earth doped yttria upconversion nanophosphors

X. Qin, Takeshi Yokomori, Y. Ju

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

Abstract

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
Title of host publication5th US Combustion Meeting 2007
PublisherCombustion Institute
Pages414-421
Number of pages8
Volume1
ISBN (Print)9781604238112
Publication statusPublished - 2007
Externally publishedYes
Event5th US Combustion Meeting 2007 - San Diego, United States
Duration: 2007 Mar 252007 Mar 28

Other

Other5th US Combustion Meeting 2007
CountryUnited States
CitySan Diego
Period07/3/2507/3/28

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physical and Theoretical Chemistry
  • Mechanical Engineering

Cite this

Qin, X., Yokomori, T., & Ju, Y. (2007). Synthesis and characterization of rare-earth doped yttria upconversion nanophosphors. In 5th US Combustion Meeting 2007 (Vol. 1, pp. 414-421). Combustion Institute.