Perovskites on the edge: challenging and redefining radiation tolerance in metal-halide perovskites

While metal-halide perovskites (MHPs) appear promising for space power due to their radiation tolerance, I will challenge this perception based on their structural fragility. I will present a framework where radiation causes displacement damage in MHPs, but a combination of lattice softness, electron-phonon coupling, and low thermal conductivity enables instantaneous defect healing. However, we believe this recovery, driven by electronic ionization and the resulting lattice heat, may also make MHPs vulnerable to high temperatures and ionizing radiation. I will outline key research areas needed to fully evaluate their suitability for space applications.