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Proceedings Paper

Synthesis and characterization of scintillating cerium-doped lanthanum fluoride nanocrystals
Author(s): Krishnaprasad Sankar; John B. Plumley; Brian A. Akins; Tosifa A. Memon; Nathan J. Withers; Gennady A. Smolyakov; Marek Osinski
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Paper Abstract

Colloidal synthesis of cerium-doped lanthanum fluoride nanocrystals is reported. The nanocrystals were characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy, steady-state UV-VIS optical absorption and photoluminescence (PL) spectroscopy, and by PL lifetime measurements. Cerium doping concentration was optimized for the maximum PL intensity. Radiation hardness of the synthesized nanocrystals was tested using a 137Cs 662-keV gamma source. Finally, scintillation was observed from the cerium-doped lanthanum fluoride nanocrystals exposed to low-level gamma radiation.

Paper Details

Date Published: 3 March 2009
PDF: 12 pages
Proc. SPIE 7189, Colloidal Quantum Dots for Biomedical Applications IV, 718909 (3 March 2009); doi: 10.1117/12.816894
Show Author Affiliations
Krishnaprasad Sankar, CHTM, The Univ. of New Mexico (United States)
John B. Plumley, CHTM, The Univ. of New Mexico (United States)
Brian A. Akins, CHTM, The Univ. of New Mexico (United States)
Tosifa A. Memon, CHTM, The Univ. of New Mexico (United States)
Nathan J. Withers, CHTM, The Univ. of New Mexico (United States)
Gennady A. Smolyakov, CHTM, The Univ. of New Mexico (United States)
Marek Osinski, CHTM, The Univ. of New Mexico (United States)


Published in SPIE Proceedings Vol. 7189:
Colloidal Quantum Dots for Biomedical Applications IV
Marek Osinski; Thomas M. Jovin; Kenji Yamamoto, Editor(s)

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