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Title: BiI 3 Crystals for High Energy Resolution Gamma-Ray Spectroscopy

Abstract

BiI 3 had been investigated for its unique properties as a layered compound semiconductor for many decades. However, despite the exceptional atomic, physical, and electronic properties of this material, good resolution gamma ray spectra had never been reported for BiI 3. The shortcomings that previously prevented BiI 3 from reaching success as a gamma ray sensor were, through this project, identified and suppressed to unlock the performance of this promising compound. Included in this work were studies on a number of methods which have, for the first time, enabled BiI 3 to exhibit spectral performance rivaling many other candidate semiconductors for room temperature gamma ray sensors. New approaches to crystal growth were explored that allow BiI 3 spectrometers to be fabricated with up to 2.2% spectral resolution at 662 keV. Fundamental studies on trap states, dopant incorporation, and polarization were performed to enhance performance of this compound. Additionally, advanced detection techniques were applied to display the capabilities of high quality BiI 3 spectrometers. Overall, through this work, BiI 3 has been revealed as a potentially transformative material for nuclear security and radiation detection sciences.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Univ. of Florida, Gainesville, FL (United States)
Publication Date:
Research Org.:
Univ. of Florida, Gainesville, FL (United States)
Sponsoring Org.:
USDOE Office of Nuclear Energy (NE)
OSTI Identifier:
1352061
Report Number(s):
13-4855
13-4855
DOE Contract Number:  
NE0000730
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Nino, Juan C., Baciak, James, Johns, Paul, Sulekar, Soumitra, Totten, James, and Nimmagadda, Jyothir. BiI3 Crystals for High Energy Resolution Gamma-Ray Spectroscopy. United States: N. p., 2017. Web. doi:10.2172/1352061.
Nino, Juan C., Baciak, James, Johns, Paul, Sulekar, Soumitra, Totten, James, & Nimmagadda, Jyothir. BiI3 Crystals for High Energy Resolution Gamma-Ray Spectroscopy. United States. doi:10.2172/1352061.
Nino, Juan C., Baciak, James, Johns, Paul, Sulekar, Soumitra, Totten, James, and Nimmagadda, Jyothir. Wed . "BiI3 Crystals for High Energy Resolution Gamma-Ray Spectroscopy". United States. doi:10.2172/1352061. https://www.osti.gov/servlets/purl/1352061.
@article{osti_1352061,
title = {BiI3 Crystals for High Energy Resolution Gamma-Ray Spectroscopy},
author = {Nino, Juan C. and Baciak, James and Johns, Paul and Sulekar, Soumitra and Totten, James and Nimmagadda, Jyothir},
abstractNote = {BiI3 had been investigated for its unique properties as a layered compound semiconductor for many decades. However, despite the exceptional atomic, physical, and electronic properties of this material, good resolution gamma ray spectra had never been reported for BiI3. The shortcomings that previously prevented BiI3 from reaching success as a gamma ray sensor were, through this project, identified and suppressed to unlock the performance of this promising compound. Included in this work were studies on a number of methods which have, for the first time, enabled BiI3 to exhibit spectral performance rivaling many other candidate semiconductors for room temperature gamma ray sensors. New approaches to crystal growth were explored that allow BiI3 spectrometers to be fabricated with up to 2.2% spectral resolution at 662 keV. Fundamental studies on trap states, dopant incorporation, and polarization were performed to enhance performance of this compound. Additionally, advanced detection techniques were applied to display the capabilities of high quality BiI3 spectrometers. Overall, through this work, BiI3 has been revealed as a potentially transformative material for nuclear security and radiation detection sciences.},
doi = {10.2172/1352061},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Wed Apr 12 00:00:00 EDT 2017},
month = {Wed Apr 12 00:00:00 EDT 2017}
}

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