Synthesis and characterization of scintillating cerium-doped lanthanum fluoride nanocrystals

Krishnaprasad Sankar; John B. Plumley; Brian A. Akins; Tosifa A. Memon; Nathan J. Withers; Gennady A. Smolyakov; Marek Osinski

doi:10.1117/12.816894

3 March 2009 Synthesis and characterization of scintillating cerium-doped lanthanum fluoride nanocrystals

Krishnaprasad Sankar, John B. Plumley, Brian A. Akins, Tosifa A. Memon, Nathan J. Withers, Gennady A. Smolyakov, Marek Osinski

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Proceedings Volume 7189, Colloidal Quantum Dots for Biomedical Applications IV; 718909 (2009) https://doi.org/10.1117/12.816894
Event: SPIE BiOS, 2009, San Jose, California, United States

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.

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Krishnaprasad Sankar, John B. Plumley, Brian A. Akins, Tosifa A. Memon, Nathan J. Withers, Gennady A. Smolyakov, and Marek Osinski "Synthesis and characterization of scintillating cerium-doped lanthanum fluoride nanocrystals", Proc. SPIE 7189, Colloidal Quantum Dots for Biomedical Applications IV, 718909 (3 March 2009); https://doi.org/10.1117/12.816894

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