Highly efficient eco-friendly X-ray scintillators based on an organic manganese halide

Liang-Jin Xu, Xinsong Lin, Qingquan He, Michael Worku and Biwu Ma ()
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Liang-Jin Xu: Florida State University
Xinsong Lin: Florida State University
Qingquan He: Florida State University
Michael Worku: Florida State University
Biwu Ma: Florida State University

Nature Communications, 2020, vol. 11, issue 1, 1-7

Abstract: Abstract Scintillation based X-ray detection has received great attention for its application in a wide range of areas from security to healthcare. Here, we report highly efficient X-ray scintillators with state-of-the-art performance based on an organic metal halide, ethylenebis-triphenylphosphonium manganese (II) bromide ((C38H34P2)MnBr4), which can be prepared using a facile solution growth method at room temperature to form inch sized single crystals. This zero-dimensional organic metal halide hybrid exhibits green emission peaked at 517 nm with a photoluminescence quantum efficiency of ~ 95%. Its X-ray scintillation properties are characterized with an excellent linear response to X-ray dose rate, a high light yield of ~ 80,000 photon MeV−1, and a low detection limit of 72.8 nGy s−1. X-ray imaging tests show that scintillators based on (C38H34P2)MnBr4 powders provide an excellent visualization tool for X-ray radiography, and high resolution flexible scintillators can be fabricated by blending (C38H34P2)MnBr4 powders with polydimethylsiloxane.

Date: 2020
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DOI: 10.1038/s41467-020-18119-y

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