TY - JOUR
T1 - Hydrothermal and Mechanosynthesis of Mixed-Cation Double Perovskite Scintillators for Radiation Detection
AU - O'Neill, Joseph
AU - Ghosh, Joydip
AU - Alghamdi, Suad
AU - Braddock, Isabel
AU - Crean, Carol
AU - Dorey, Robert
AU - Mulholland, Roma
AU - Richards, Sion
AU - Wilson, Matthew
AU - Salway, Hayden
AU - Anaya, Miguel
AU - Reiss, Justin
AU - Wolfe, Douglas
AU - Sellin, Paul
N1 - Publisher Copyright:
© 2023 The Authors. Advanced Optical Materials published by Wiley-VCH GmbH.
PY - 2024/1/16
Y1 - 2024/1/16
N2 - This article details work performed on the synthesis and characterization of an inorganic mixed-cation double halide perovskite, Cs2Ag.6Na.4In.85Bi.15Cl6 (CANIBIC). Single crystals have been created via a hydrothermal reaction, milled into a powder, and pressed into pellets, while nanocrystals have been directly synthesized via mechanosynthesis. A computational model is constructed to predict the X-ray diffraction pattern of CANIBIC; this model aligns very well with the X-ray diffraction pattern measured for CANIBIC crystal powder. This model can therefore be developed in the future as a tool to predict lattice parameters and crystal structures of other novel double-halide perovskites. Photoluminescence spectra obtained from each format show broad emission centered at 630 nm, as is typical for self-trapped exciton emission; self-trapped exciton emission is also confirmed by investigating photoluminescence intensity as a function of laser power. Nanocomposites are produced via the loading of nanocrystals of CANIBIC into PMMA. Although nanocomposite disks consisting of a small proportion of CANIBIC nanocrystals in PMMA have a smaller mass attenuation coefficient than a pressed pellet of CANIBIC, these disks have comparatively bright radioluminescence due to their optical transparency. These nanocomposite disks are therefore a particularly useful format for the practical use of the CANIBIC scintillator.
AB - This article details work performed on the synthesis and characterization of an inorganic mixed-cation double halide perovskite, Cs2Ag.6Na.4In.85Bi.15Cl6 (CANIBIC). Single crystals have been created via a hydrothermal reaction, milled into a powder, and pressed into pellets, while nanocrystals have been directly synthesized via mechanosynthesis. A computational model is constructed to predict the X-ray diffraction pattern of CANIBIC; this model aligns very well with the X-ray diffraction pattern measured for CANIBIC crystal powder. This model can therefore be developed in the future as a tool to predict lattice parameters and crystal structures of other novel double-halide perovskites. Photoluminescence spectra obtained from each format show broad emission centered at 630 nm, as is typical for self-trapped exciton emission; self-trapped exciton emission is also confirmed by investigating photoluminescence intensity as a function of laser power. Nanocomposites are produced via the loading of nanocrystals of CANIBIC into PMMA. Although nanocomposite disks consisting of a small proportion of CANIBIC nanocrystals in PMMA have a smaller mass attenuation coefficient than a pressed pellet of CANIBIC, these disks have comparatively bright radioluminescence due to their optical transparency. These nanocomposite disks are therefore a particularly useful format for the practical use of the CANIBIC scintillator.
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U2 - 10.1002/adom.202301335
DO - 10.1002/adom.202301335
M3 - Article
AN - SCOPUS:85175957596
SN - 2195-1071
VL - 12
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 2
M1 - 2301335
ER -