Real-Time Electron and Hole Transport Dynamics in Halide Perovskite Nanowires.

ABSTRACT: For optoelectronic devices, high transport mobilities of electrons and holes are desirable, which, moreover, should be close to identical. Acousto-optoelectric spectroscopy is employed to probe the spatiotemporal dynamics of both electrons and holes inside CsPbI3 nanowires. These dynamics are induced without the need for electrical contacts simply by the piezoelectric field of a surface acoustic wave. Its radio frequency of fSAW = 324 MHz natively avoids spurious contributions from ion migration typically occurring in these materials. The observed dynamic modulation of the photoluminescence is faithfully reproduced by solving the drift and diffusion currents of electrons and holes induced by the surface acoustic wave. These calculations confirm that the mobilities of electrons and holes ar

SUBMITTER: Janker L 

PROVIDER: S-EPMC6909264 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature