Journal
PHOTONICS RESEARCH
Volume 9, Issue 3, Pages 351-356Publisher
CHINESE LASER PRESS
DOI: 10.1364/PRJ.412959
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Funding
- National Natural Science Foundation of China [11435010, 11705090, 11875166]
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A novel solution-processed Cs3Cu2I5 single crystal scintillator with outstanding stability and radiation hardness is reported, providing a low-cost option with detection performance comparable to commercial products for gamma-ray detection.
Bulk scintillators that are with high density, low cost, and fine pulse-height energy spectral resolution, and are nonhygroscopic and user friendly, are desired for high-energy gamma-ray spectroscopy application. Recently, low-cost solution-processed perovskite nanoscintillators have been demonstrated with outstanding performances for indirect low-energy X-ray detection; however, the stability and thickness are not suitable for high-energy gamma-ray detection. Here, we report scintillation performances of a low-cost solution-processed bulk 0D Cs3Cu2I5 single crystal. The self-trapped exciton emission results in a large Stokes shift (109 nm) that is reabsorption free. A broad X-ray excited emission matches well with the sensitivity of a silicon photodiode. The unique Cs+ surrounded isolated [Cu2I5](3-) cluster scintillator provides ultra-stability in air and strong radiation hardness under high-dose gamma-ray exposure from a Co-60 source. This solution-processed Cs3Cu2I5 scintillator is expected with low-cost and has detection performances comparable to commercial alkali-halide scintillator products. (C) 2021 Chinese Laser Press
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