Energy transfer and radiation damping in gold-MAPbI₃ heterostructures.

ABSTRACT: Coupling excitonic systems to propagating surface plasmon polaritons (SPPs) can potentially extend the length scale for energy transport. However, experimental visualization of these coupled states is challenging. Here, leakage radiation microscopy was used to examine the SPP modes in lithographically fabricated gold nanostripes (AuNS) coated with a thin film of methylammonium lead iodide (MAPbI₃). By combining real-space and momentum-resolved back focal plane imaging with wavelength-tunable excitation, dispersion relations, group velocities, propagation lengths, and, consequently, dephasing rates were extracted for the SPP modes. Compared to the bare AuNS structures, the AuNS/MAPbI₃ hybrid systems exhibit increased SPP attenuation, attributed to a combination of reso

SUBMITTER: Ghosh B 

PROVIDER: S-EPMC12577014 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature