Synthesis and characterization of scintillating lead-iodide-based nanocrystals

Krishnaprasad Sankar; Brian A. Akins; Tosifa A. Memon; Nathan J Withers; Gennady A. Smolyakov; Marek Osiński

doi:10.1117/12.784060

13 March 2008 Synthesis and characterization of scintillating lead-iodide-based nanocrystals

Krishnaprasad Sankar, Brian A. Akins, Tosifa A. Memon, Nathan J Withers, Gennady A. Smolyakov, Marek Osiński

Proceedings Volume 6866, Colloidal Quantum Dots for Biomedical Applications III; 686604 (2008) https://doi.org/10.1117/12.784060
Event: SPIE BiOS, 2008, San Jose, California, United States

Abstract

Lead-iodide-based nanocrystals were synthesized by dissolution of commercial lead iodide powder in a coordinating solvent, tetrahydrofuran, and subsequent re-crystallization after an optimum addition of methanol. The nanocrystals were characterized by transmission electron microscopy, scanning electron microscopy, energy dispersive spectroscopy (EDS), steady state UV-visible optical absorption and photoluminescence spectroscopy, and by photoluminescence lifetime and quantum efficiency measurements. The radiation hardness of the synthesized material was tested using a ¹³⁷Cs gamma source. Scintillation was observed from the lead-iodide based material exposed to low-level gamma irradiation.

Citation Download Citation

Krishnaprasad Sankar, Brian A. Akins, Tosifa A. Memon, Nathan J Withers, Gennady A. Smolyakov, and Marek Osiński "Synthesis and characterization of scintillating lead-iodide-based nanocrystals", Proc. SPIE 6866, Colloidal Quantum Dots for Biomedical Applications III, 686604 (13 March 2008); https://doi.org/10.1117/12.784060

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