Metal halide perovskite for neutron scintillators and direct detection

Neutron detection has significantly applied in security inspection and border control, high-energy physics, medical diagnostics, and nuclear monitoring. Recently, as one of the alternative materials, metal halide perovskites (MHPs) show great potential in high-performance neutron detector in both indirect and direct detecting mode. H or radioactive isotope, physically mixed, or atomic-level chemical hybrid into MHPs possesses large cross sections toward neutrons. The produced secondary particles induce MHPs generating high radioluminescence or detectable carriers. Accordingly, some advanced works about MHPs based neutron detectors were carried out and significant advancements led to unexpected and effective opportunities for the utilization of MHPs in the detection of neutrons. Herein, we aim at systematically summarizing current progress on MHPs based neutron detectors: (1) first, an introduction of background and detection mechanisms is provided to understand the neutron detectors clearly; (2) after that, we summarize the previously reported MHPs materials for neutron detecting and put an emphasis on the advanced work for various MHPs based neutron detectors; and (3) finally, the challenges remained and promising opportunities are also presented, for further boosting the performance of MHPs-based neutron detectors.