Paper 13361-5
Paper 13361-5
Perovskites on the edge: Challenging and redefining radiation tolerance in metal-halide semiconductors (Invited Paper)
28 January 2025 • 3:30 PM - 4:00 PM PST | Moscone West, Room 2001 (Level 2)
Abstract
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.
Presenter
Ahmad Kirmani
Rochester Institute of Technology (United States)
Dr. Ahmad Kirmani is an Assistant Professor in the School of Chemistry and Materials Science, College of Science, at the Rochester Institute of Technology (RIT). He leads a research group dedicated to advancing printable electronics for extreme environments. His group focuses on understanding the tolerance of next-generation ink-based semiconductors, including metal-halide perovskites and metal oxides, to radiation and other stressors. Prior to joining RIT in 2023, Dr. Kirmani was a postdoctoral researcher at the National Renewable Energy Laboratory (NREL) where he conducted foundational research on radiation effects in perovskite semiconductors. His notable contributions include leading a consensus article on radiation testing protocols for perovskite solar cells, developing ultralight barrier layers for space applications, and demonstrating that perovskites can heal and recover after radiation exposure. His work has resulted in over 60 peer-reviewed publications.