Abstract
In this paper, a high-quality Cl-doped two-dimensional halide perovskite (PEA)(2)Pb(Br(0.95)Cl(0.05))(4) crystal was prepared using a seed-induced volatile solvent method. On optimizing the Cl(-) doping concentration, we found that 5% Cl-doping results in (PEA)(2)PbBr(4) with the highest optical and photon yield. Based on the Cl-doped (PEA)(2)PbBr(4) single crystal, the response characterization of the (PEA)(2)Pb(Br(0.95)Cl(0.05))(4) crystal in the mixed field of neutrons and gamma rays (n/γ) has been verified. Using the time-of-flight method and the linear relationship between integral charge and neutron yield, it was proved that (PEA)(2)Pb(Br(0.95)Cl(0.05))(4) crystal can be used for n/γ screening. The time difference between the fast neutron released by a single nuclear reaction and the γ photon arriving at the detector was 130 ns, and the arrival time of the γ photon is earlier than that of the fast neutron. This work has a broad application prospect in the study of nuclear reaction kinetics, the monitoring of the neutron yield of fusion devices and the total energy released by nuclear reactions.