Organic Manganese Halides with Near-Unity Quantum Efficiency for High-Resolution and Flexible X-Ray Detection and Imaging.

In this paper, two new organic manganese halides (pe-ted)MnX (pe-ted = ethylphenyltriethylenediamine cation, X = Cl, Br) are synthesized, exhibiting green luminescence with near-unity photoluminescence quantum efficiency. (pe-ted)MnBr shows good linear response to X-ray dose rate, with a high light yield of ≈62 000 photons MeV and low detection limit of 1.376 µGy s. Flexible scintillator film is prepared by blending with polydimethylsiloxane for high-resolution imaging, with a low detection limit (5.173 µGy s), an excellent X-ray imaging spatial resolution (18.0 lp mm) and an impressive X-ray irradiation switching stability (3.6 mGy s). WLED of high color rendering index has also been fabricated. These findings represent an example of shapeable X-ray scintillators, providing new possibilities for curved and 3D X-ray imaging.