EPJ Web of Conferences (Jan 2019)

Ultrafast carrier interactions in metal-halide perovskites probed with two-dimensional electronic spectroscopy

  • Johannes M. Richter,
  • Branchi Federico,
  • Franco V. A. Camargo,
  • Nagahara Tetsuhiko,
  • Zhao Baodan,
  • Richard H. Friend,
  • Cerullo Giulio,
  • Deschler Felix

DOI
https://doi.org/10.1051/epjconf/201920504012
Journal volume & issue
Vol. 205
p. 04012

Abstract

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We use 2D electronic spectroscopy with sub-10-fs resolution to probe carrier-carrier scattering in perovskites. We report excitation-density dependent thermalization times below 100-fs. Strong coupling with excitonic states further reveals sub-bandgap states with low oscillator strength.