Nano Science and Technology InstituteNano Science and Technology Institute
Nano Science and Technology Institute 2005 NSTI Nanotechnology Conference & Trade Show
Nanotech 2005
Bio Nano 2005
Business & Investment
Nano Impact Workshop
Program
Sessions
Sunday
Monday
Tuesday
Wednesday
Thursday
Index of Authors
Index of Keywords
Keynote Presentations
Confirmed Speakers
Participating Companies
Industry Focus Sessions
Nanotech Expo
Special Symposia
Conferences
Sponsors
Exhibitors
Venue 2005
Organization
Press Room
Subscribe
Site Map
Nanotech 2005 At A Glance
Nanotech Proceedings
Nanotechnology Proceedings
Global Partner
nano tech
Supporting Organizations
Nanotech 2005 Supporting Organization
Media Sponsors
Nanotech 2005 Medias Sponsors
Event Contact
696 San Ramon Valley Blvd., Ste. 423
Danville, CA 94526
Ph: (925) 353-5004
Fx: (925) 886-8461
E-mail:
 
 

Synthesis of Y2O3:Eu Phosphor Nanoparticles by Flame Spray Pyrolysis

X. Qin, Y. Ju, S. Bernhard and N. Yao
Princeton University, US

Keywords:
Y2O3:Eu, nanoparticle, flame, photoluminescence

Abstract:
Nanoscale Y2O3:Eu phosphor particles were synthesized by flame spray pyrolysis method and the effects of precursor solution and annealing treatment were discussed. The flame spray pyrolysis system consists of a spray generator, a coflow burner, quartz reactor, particle collection filter and vacuum pump. The starting solution was prepared by dissolving yttrium and europium nitrate in distilled water, ethanol or propanol alcohol. The structure and morphology of the as-prepared particles were examined using SEM. The photoluminescence (PL) intensity was measured by a spectrophotometer. The particle size can be controlled by varying precursor concentration, flame temperature and residence time. Compared with previous report, SEM shows fine and smooth structure for particles prepared from ethanol alcohol as precursor solution. Upon excitation with 355 nm light, the particles show red emission and the PL intensity of particles using ethanol is 30% stronger than those using water as precursor solution. Annealing particles at 1200C can convert the monoclinic phase into cubic phase. The concentration quenching limit was also increased to 18% mol Eu. It is expected that these particles will be useful in developing emission field or high resolution displays and be used as markers in biomedical research.

Back to Program

Sessions Sunday Monday Tuesday Wednesday Thursday Authors

Nanotech 2005 Conference Program Abstract

 
Gold Sponsors
Nanotech Gold Sponsors
Silver Sponsors
Nanotech Silver Sponsors
Gold Key Sponsors
Nanotech Gold Key Sponsors
Nanotech Ventures Sponsors
Nanotech Ventures Sponsors
Sponsors
Nanotech Sponsors
News Headlines
NSTI Online Community
 
 

© Nano Science and Technology Institute, all rights reserved.
Terms of use | Privacy policy | Contact