Scintillation properties of (C6H5C2H4NH3)2Pb1-xSnxBr4 crystals having two-dimensional quantum-well structures

Abstract We fabricated (C6H5C2H4NH3)2Pb1-xSnxBr4 single crystals by the poor-solvent diffusion method and evaluated the photoluminescence (PL) and scintillation properties. In PL emission maps, exciton-emission peaks were observed at 410 and 440 nm. The PL quantum yields of x = 0.1, 0.25, and 0.5 samples were 23.3, 24.1, and 19.2% within typical errors (±2%), respectively. In scintillation spectra under X-ray irradiation, the exciton-emission peak was observed at 440 nm. The scintillation light yields of x = 0.1, 0.25, and 0.5 samples under 59.5 keV γ-ray irradiation by 241Am were estimated to be 14,000, 16,000, and 11,000 ph/MeV within ±10% errors, respectively.