Anisotropic carrier dynamics and laser-fabricated luminescent patterns on oriented single-crystal perovskite wafers.

ABSTRACT: Perovskite materials and their applications in optoelectronics have attracted intensive attentions in recent years. However, in-depth understanding about their anisotropic behavior in ultrafast carrier dynamics is still lacking. Here we explore the ultrafast dynamical evolution of photo-excited carriers and photoluminescence based on differently-oriented MAPbBr₃ wafers. The distinct in-plane polarization of carrier relaxation dynamics of the (100), (110) and (111) wafers and their out-of-plane anisotropy in a picosecond time scale were found by femtosecond time- and polarization-resolved transient transmission measurements, indicating the relaxation process dominated by optical/acoustic phonon interaction is related to photoinduced transient structure rearrangements. Femtosecond

SUBMITTER: Ge C 

PROVIDER: S-EPMC10828488 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature