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

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.

SUBMITTER: Xu LJ 

PROVIDER: S-EPMC7455565 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature