Highly efficient eco-friendly X-ray scintillators based on an organic manganese halide.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 32859920.
- Also identified by DOI 10.1038/s41467-020-18119-y and PMC identifier 7455565.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
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 ((C<sub>38</sub>H<sub>34</sub>P<sub>2</sub>)MnBr<sub>4</sub>), 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<sup>-1</sup>, and a low detection limit of 72.8 nGy s<sup>-1</sup>. X-ray imaging tests show that scintillators based on (C<sub>38</sub>H<sub>34</sub>P<sub>2</sub>)MnBr<sub>4</sub> powders provide an excellent visualization tool for X-ray radiography, and high resolution flexible scintillators can be fabricated by blending (C<sub>38</sub>H<sub>34</sub>P<sub>2</sub>)MnBr<sub>4</sub> powders with polydimethylsiloxane.