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A Super-Bright and Temperature-Inert Au Complex Scintillator With Thermally Stimulated Delayed Phosphorescence
Qiu-Chen Peng1, You-Song Hu1, Jia-Wang Yuan1
1Tianjian Laboratory of Advanced Biomedical Sciences, Key Laboratory of Special Functional Molecular Materials, Ministry of Education, College of Chemistry, Zhengzhou University, Zhengzhou, China.
Advanced Materials (Deerfield Beach, Fla.)
|July 22, 2026
Summary
This study introduces Au(TFPP)3, the first molecule-based scintillator utilizing thermally stimulated delayed phosphorescence (TSDP). This breakthrough overcomes temperature sensitivity, offering high light yield and excellent stability for advanced radiation detection applications.
Area of Science:
- Materials Science
- Radiation Detection
- Photophysics
Background:
- Scintillators are vital for high-energy radiation sensors.
- Molecule-based scintillators offer advantages like stability and low toxicity.
- Current limitations include poor exciton utilization and luminescence efficiency.
Purpose of the Study:
- To develop a novel molecule-based scintillator with improved radioluminescence properties.
- To address the temperature sensitivity issue affecting scintillator performance.
- To report the first thermally stimulated delayed phosphorescence (TSDP) molecule-based scintillator.
Main Methods:
- Synthesis and characterization of the Au(TFPP)3 scintillator.
- Investigation of the thermally stimulated delayed phosphorescence (TSDP) mechanism.
- Evaluation of photoluminescence quantum yield (PLQY) and light yield (LY).
- Testing luminescence properties across a wide temperature range (100–370 K).
Main Results:
- Au(TFPP)3 exhibits an ultrahigh photoluminescence quantum yield (PLQY) >99%.
- Achieved an excellent light yield (LY) of 99475 ± 275 photons MeV⁻¹.
- Demonstrated temperature-independent luminescence from 100 to 370 K.
- Successfully applied in low-dose X-ray imaging and alpha/beta particle detection.
Conclusions:
- The TSDP process enables efficient utilization of triplet excitons, overcoming temperature effects.
- Au(TFPP)3 offers superior brightness and temperature stability for ionizing radiation detection.
- This material shows significant potential for advanced radiation sensing technologies.
Keywords:
scintillatorthermally stimulated delayed phosphorescencex‐ray imagingα/β particle detectionMore Related Videos
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