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

Area of Science:

• Materials Science
• Solid-State Physics
• Radiological Sciences

Background:

• Scintillation-based X-ray detection is crucial for security and healthcare.
• Developing efficient and cost-effective X-ray scintillators remains an active research area.

Purpose of the Study:

• To report novel, high-performance X-ray scintillators based on an organic metal halide.
• To characterize the material's structural, optical, and scintillation properties.
• To evaluate its potential for X-ray imaging applications.

Main Methods:

• Facile solution growth method at room temperature to synthesize inch-sized single crystals of ethylenebis-triphenylphosphonium manganese (II) bromide ((C38H34P2)MnBr4).
• Photoluminescence spectroscopy to determine emission characteristics and quantum efficiency.
• X-ray scintillation property measurements, including dose rate response, light yield, and detection limit.
• X-ray imaging tests using the synthesized material.

Main Results:

• Synthesized inch-sized single crystals of (C38H34P2)MnBr4.
• Achieved a high photoluminescence quantum efficiency of ~95% with green emission at 517 nm.
• Demonstrated excellent X-ray scintillation properties: high light yield (~80,000 photon MeV-1), low detection limit (72.8 nGy s-1), and linear dose rate response.
• Successful X-ray imaging visualization and fabrication of high-resolution flexible scintillators.

Conclusions:

• (C38H34P2)MnBr4 is a highly efficient organic metal halide scintillator with state-of-the-art performance.
• The facile synthesis and excellent properties make it a promising material for advanced X-ray detection and imaging.
• Flexible, high-resolution X-ray detectors can be fabricated using this material.