The physics of the exciton is studied in multilayered perovskite materials, combining magneto-optical spectroscopy and semi-empirical resolution of the exciton Bethe-Salpeter equation. Scaling laws are proposed to account for the influence of the quantum and dielectric well thickness.
a) Optical image of multilayered perovskites crystals , b) variation of the exciton binding energy as a function of n (number of perovskite layers) for various levels of theory, c) variation of the photoluminescence spectrum as a function of n.Contacts
 Laurent PEDESSEAU laurent.pedesseau insa-rennes.fr +33 2 23 23 88 69 |
 Jacky EVEN jacky.even insa-rennes.fr +33 2 23 23 82 95 |
Partners
LANL (Los Alamos, USA), Rice University (Houston, USA), Northwestern University (Chicago, USA), ISCR (Rennes, France)
Reference
Scaling law for excitons in 2D perovskite quantum wells, J.-C. Blancon, A.V. Stier, H. Tsai, W. Nie, C.C. Stoumpos, B. Traoré, L. Pedesseau, M. Kepenekian, F. Katsutani, G.T. Noe, J. Kono, S. Tretiak, S.A. Crooker, C. Katan , M.G. Kanatzidis, J.J. Crochet, J. Even & A.D. Mohite Nat. Commun. Vol. 9, 2254, 2018, hal-01811274
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