Sub-100-picosecond time resolution from undoped and Li-doped two-dimensional perovskite scintillators

Fast hybrid organic–inorganic two-dimensional (2D) perovskite scintillators with high light yield are measured for their scintillating properties. With a light yield of 17 300 ± 2140 photons/MeV, undoped PEA2PbBr4 crystals already exhibit 100 ± 4 ps coincidence time resolution (CTR) at 511 keV excit...

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Detalles Bibliográficos
Autores principales: Cala', Roberto, Frank, Isabel, Pagano, Fiammetta, Maddalena, Francesco, Dang, Cuong, Birowosuto, Muhammad Danang, Auffray, Etiennette
Lenguaje:eng
Publicado: 2022
Materias:
Detectors and Experimental Techniques
Acceso en línea:https://dx.doi.org/10.1063/5.0093606
http://cds.cern.ch/record/2816478
Descripción
Sumario:Fast hybrid organic–inorganic two-dimensional (2D) perovskite scintillators with high light yield are measured for their scintillating properties. With a light yield of 17 300 ± 2140 photons/MeV, undoped PEA2PbBr4 crystals already exhibit 100 ± 4 ps coincidence time resolution (CTR) at 511 keV excitation. However, Li-doped PEA2PbBr4 crystals have improved the light yield to 21 400 ± 2140 photons/MeV and showed sub-100 ps CTR. Such CTR values and low-cost manufacturing processes make these 2D perovskite scintillators as promising competitors for commercial lanthanide scintillators in time-of-flight positron emission tomography and for fast timing detectors.

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