Elucidating early proton irradiation effects in metal halide perovskites via photoluminescence spectroscopy.

ABSTRACT: Metal halide perovskite (MHP) solar cells are promising aerospace power sources given their potential as inexpensive, lightweight, and resilient solar electricity generators. Herein, the intrinsic radiation tolerance of unencapsulated methylammonium lead iodide/chloride (CH₃NH₃PbI_3-xCl_x) films was isolated. Spatially resolved photoluminescence (PL) spectroscopy and confocal microscopy revealed the fundamental defect physics through optical changes as films were irradiated with 4.5 MeV neutrons and 20 keV protons at fluences between 5×10¹⁰ and 1×10¹⁶ p⁺/cm². As proton radiation increased beyond 1×10¹³ p⁺/cm², defects formed in the film, causing both a decrease in photolum

SUBMITTER: Erickson S 

PROVIDER: S-EPMC11743089 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature