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 Karl Franzens University Graz

Graz University of Technology 

Halide Perovskite Nanocrystals: From Platelets to Supercrystals
Jochen Feldmann
Chair for Photonics and Optoelectronics, Nano-Institute Munich Ludwig-Maximilians-Universität (LMU)
17:15 - 18:15 Tuesday 21 May 2019 TUG P2

The optical properties of metal halide perovskite nano-platelets with controllable thickness down to one monolayer will be discussed. Pronounced quantum confinement effects, large excitonic binding energies and comparably high radiative recombination rates have been found, all depending on the number of monolayers present in the respective nano-platelets. Ultrafast optical experiments provide further insight into characteristic charge carrier and spin relaxation scenarios in colloidal perovskite nanocrystals. Finally, the assembly of halide perovskite nanocrystals into ordered supercrystals leads to remarkable changes of their linear and nonlinear optical properties.


References

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[4] V. Hintermayr et al., ACS Nano 12, 10151 (2018)