Dynamic THz Signatures Of Charge-lattice CorrelationsPlenary talk (PLEN6)
Wed, 11 Nov 2020 11:00pm to 11:45pm
The hybrid metal halide perovskites have shown enormous promise for optoelectronic devices including efficient photovoltaics, however their insensitivity to defects has remained puzzling. Polaron correlations have been cited as a possible means to protect charge carriers from defect scattering. In this paper, we show time-resolved THz spectroscopy measurements are capable of directly probing polaron correlations via an intra-band coherent beat arising from center-of-mass quasi-particle motion and the internal motion of charge within its self-induced potential.
Authors: Cooke, David; Lan, Yang; Valverde-Chavez, David; Dringoli, Benjamin; Ponseca Jr., Carlito; Sutton, Mark; Kanatzidis, Mercouri; He, Yihui
Georgia Institute of Technology, Linköping Universitet, McGill University, Northwestern University