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Improvement of Light Output of MAPbBr Single Crystal for Ultrafast and Bright Cryogenic Scintillator. | LitMetric

AI Article Synopsis

Article Abstract

The remarkable brightness and rapid scintillation observed in perovskite single crystals (SCs) become even more striking when they are operated at cryogenic temperatures. In this study, we present advancements in enhancing the scintillation properties of methylammonium lead bromide (MAPbBr) SCs by optimizing the synthesis process. We successfully synthesized millimeter-sized MAPbBr SCs with bright green luminescence under UV light. However, both MAPbBr (Control-1M and THF-0.4M) SCs display notable radioluminescence exclusively at low temperatures due to their phase transitions. Notably, the THF-0.4M SCs exhibit a remarkable improvement in radioluminescence light yield, surpassing Control-1M SCs more than 2-fold. Further, THF-0.4M SCs demonstrate an ultrafast decay component of 0.52 ns (82.2%) and a slower component of 1.80 ns (17.8%), contributing to a rapid scintillation response at low temperatures. Therefore, the amalgamation of ultrafast decay components and improved radioluminescence light yield equips THF-0.4M SCs to emerge as a top choice for perovskite scintillators for X-ray timing applications.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11017313PMC
http://dx.doi.org/10.1021/acs.jpclett.4c00379DOI Listing

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