Synthesis and characterization of scintillating lead-iodide-based nanocrystals

被引：0
|
作者：
Sankar, Krishnaprasad [1 ]
Akins, Brian A. [1 ]
Memon, Tosifa A. [1 ]
Withers, Nathan J. [1 ]
Smolyakov, Gennady A. [1 ]
Osinski, Marek [1 ]
机构：
[1] Univ New Mexico, Ctr High Technol Mat, Albuquerque, NM 87106 USA
来源：
COLLOIDAL QUANTUM DOTS FOR BIOMEDICAL APPLICATIONS III | 2008年 / 6866卷
关键词：
positron emission tomography; radiation detectors; nanoscintillators; lead iodide; iodolaurionite;
D O I：
10.1117/12.784060
中图分类号：
R318 [生物医学工程];
学科分类号：
0831 ;
摘要：
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 (CS)-C-137 gamma source. Scintillation was observed from the lead-iodide based material exposed to low-level gamma irradiation.
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页数：12
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