Scintillation properties of organic–inorganic layered perovskite-type compounds with a methylphenethylamine

Abstract Photoluminescence and scintillation characteristics of organic–inorganic layered perovskite-type compounds with a methylphenethylamine were evaluated for possible scintillator applications, and crystals of (2-CH 3 C 6 H 4 C 2 H 4 NH 3 ) 2 PbBr 4 (2CH3Phe), (3-CH 3 C 6 H 4 C 2 H 4 NH 3 ) 2 PbBr 4 (3CH3Phe) and (4-CH 3 C 6 H 4 C 2 H 4 NH 3 ) 2 PbBr 4 (4CH3Phe) were fabricated by a temperature gradient method. Emissions at 406 nm for 2CH3Phe, 433 nm for 3CH3Phe and 430 nm for 4CH3Phe were observed under X-ray irradiation. The scintillation light yields were 2700 photons MeV −1 for 2CH3Phe, 8200 photons MeV −1 for 3CH3Phe, 5800 photons MeV −1 for 4CH3Phe, which were lower than that of (C 6 H 5 C 2 H 4 NH 3 ) 2 PbBr 4 . In addition, the scintillation decay times were 6.3 ns for 2CH3Phe, 7.6 ns for 3CH3Phe, 7.3 ns for 4CH3Phe, and they were found to be lower than that of (C 6 H 5 C 2 H 4 NH 3 ) 2 PbBr 4 .