Exciton-Carrier Dynamics in 2D Perovskites.

  title={Exciton-Carrier Dynamics in 2D Perovskites.},
  author={Andr{\'e}s Burgos‐Caminal and Etienne Christophe Socie and Marine E. F. Bouduban and Jacques‐E. Moser},
  journal={The journal of physical chemistry letters},
Two-dimensional Ruddlesden-Popper hybrid lead halide perovskites have become a major topic in perovskite optoelectronics. Here, we aim to unravel the ultrafast dynamics governing the evolution of charge carriers and excitons in these materials. Using a combination of ultrabroadband time-resolved THz (TRTS) and fluorescence upconversion spectroscopies, we find that sequential carrier cooling and exciton formation best explain the observed dynamics, where exciton-exciton interactions play an… 

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