CE30 - Physique de la matière condensée et de la matière diluée

correlated electron and structural dynamics in quasi-2D HYbrid PErovskites – 2D-HYPE

Submission summary

Hybrid lead halide perovskites are materials that currently attract widespread interest for their application in optoelectronic devices. Their quasi two-dimensional equivalents have shown higher stability than the 3D compounds and offer the possibility to tune the out-of-plane screening properties. Here, we propose to monitor concurrent excited state and screening dynamics on ultrafast timescales. Time resolved photoemission, photoluminescence and high-field THz excitation will provide complementary views on the entangled degrees of freedom. In particular, we aim to follow the exciton formation, quantify the spin-orbit interaction, and control screening effects due to dynamic disorder, cation orientation and electronic confinement; all of these being potential ingredients for Rashba splitting and ferroelectricity in this material class. Our research project will offer novel insights on non-equilibrium physics and might as well lead to new strategies for materials optimization.

Project coordination

Luca PERFETTI (Laboratoire des Solides Irradiés)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

LuMIn Lumière, Matière et Interfaces
LSI Laboratoire des Solides Irradiés
FHI Fritz Haber Institute / Department of Physical Chemistry

Help of the ANR 636,800 euros
Beginning and duration of the scientific project: January 2022 - 36 Months

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