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Title: Crystal growth of LiIn 1–xGa xSe 2 crystals

Abstract

Lithium containing chalcogenide single crystals have become very promising materials for photonics and radiation detection. Detection applications include nuclear nonproliferation, neutron science, and stellar investigations for the search of life. Synthesis and single crystal growth methods for lithium containing chalcogenide, specifically LiIn 1-xGa xSe 2, single crystals are discussed. This study elucidates the possibility of improving neutron detection by reducing the indium capture contribution; with the incorporation of the lithium-6 isotope, gallium substitution may overcome the neutron detection efficiency limitation of 6LiInSe 2 due to appreciable neutron capture by the indium-115 isotope. As a figure of merit, the ternary parent compounds 6LiInSe 2 and 6LiGaSe 2 were included in this study. Quality crystals can be obtained utilizing the vertical Bridgman method to produce quaternary compounds with tunable optical properties. Here, quaternary crystals of varying quality depending on the gallium concentration, approximately 5 x 5 x 2 mm 3 or larger in volume, were harvested, analyzed and revealed tunable absorption characteristics between 2.8-3.4 eV.

Authors:
 [1];  [2];  [3];  [4];  [5];  [5];  [6]
  1. Y-12 National Security Complex, Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States)
  2. Y-12 National Security Complex, Oak Ridge, TN (United States); Fisk Univ., Nashville, TN (United States)
  3. Y-12 National Security Complex, Oak Ridge, TN (United States)
  4. Fisk Univ., Nashville, TN (United States)
  5. Vanderbilt Univ., Nashville, TN (United States); Fisk Univ., Nashville, TN (United States)
  6. Y-12 National Security Complex, Oak Ridge, TN (United States); Vanderbilt Univ., Nashville, TN (United States); Univ. of Tennessee, Knoxville, TN (United States)
Publication Date:
Research Org.:
Oak Ridge Y-12 Plant (Y-12), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1409372
Report Number(s):
MS/STO-160804-2
Journal ID: ISSN 0022-0248; TRN: US1703083
Grant/Contract Number:  
NA0001942
Resource Type:
Accepted Manuscript
Journal Name:
Journal of Crystal Growth
Additional Journal Information:
Journal Volume: 468; Journal Issue: C; Journal ID: ISSN 0022-0248
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; Lithium; Bridgman; neutron; crystal growth; chalcogenide; solid-solution

Citation Formats

Wiggins, Brenden, Bell, Joseph, Woodward, Jonathan, Goodwin, Brandon, Stassun, Keivan, Burger, Arnold, and Stowe, Ashley. Crystal growth of LiIn1–xGaxSe2 crystals. United States: N. p., 2016. Web. doi:10.1016/j.jcrysgro.2016.10.051.
Wiggins, Brenden, Bell, Joseph, Woodward, Jonathan, Goodwin, Brandon, Stassun, Keivan, Burger, Arnold, & Stowe, Ashley. Crystal growth of LiIn1–xGaxSe2 crystals. United States. doi:10.1016/j.jcrysgro.2016.10.051.
Wiggins, Brenden, Bell, Joseph, Woodward, Jonathan, Goodwin, Brandon, Stassun, Keivan, Burger, Arnold, and Stowe, Ashley. Sat . "Crystal growth of LiIn1–xGaxSe2 crystals". United States. doi:10.1016/j.jcrysgro.2016.10.051. https://www.osti.gov/servlets/purl/1409372.
@article{osti_1409372,
title = {Crystal growth of LiIn1–xGaxSe2 crystals},
author = {Wiggins, Brenden and Bell, Joseph and Woodward, Jonathan and Goodwin, Brandon and Stassun, Keivan and Burger, Arnold and Stowe, Ashley},
abstractNote = {Lithium containing chalcogenide single crystals have become very promising materials for photonics and radiation detection. Detection applications include nuclear nonproliferation, neutron science, and stellar investigations for the search of life. Synthesis and single crystal growth methods for lithium containing chalcogenide, specifically LiIn1-xGaxSe2, single crystals are discussed. This study elucidates the possibility of improving neutron detection by reducing the indium capture contribution; with the incorporation of the lithium-6 isotope, gallium substitution may overcome the neutron detection efficiency limitation of 6LiInSe2 due to appreciable neutron capture by the indium-115 isotope. As a figure of merit, the ternary parent compounds 6LiInSe2 and 6LiGaSe2 were included in this study. Quality crystals can be obtained utilizing the vertical Bridgman method to produce quaternary compounds with tunable optical properties. Here, quaternary crystals of varying quality depending on the gallium concentration, approximately 5 x 5 x 2 mm3 or larger in volume, were harvested, analyzed and revealed tunable absorption characteristics between 2.8-3.4 eV.},
doi = {10.1016/j.jcrysgro.2016.10.051},
journal = {Journal of Crystal Growth},
number = C,
volume = 468,
place = {United States},
year = {2016},
month = {10}
}

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