The dynamic response of metal halide perovskite devices shows a variety of physical responses that need to be understood and classified for enhancing the performance and stability and for identifying new physical behaviours that may lead to developing new applications. .The impedance spectra announce the type of hysteresis, either regular for capacitive response or inverted hysteresis for inductive response. We present a physical model that explains both the interpretation of impedance spectra and the evolution of current-voltage curves. This enables the control of hysteresis from the measurement of impedance spectroscopy. We apply the dynamic picture to the characterization of halide perovskite memristors. It has a resistance that depends on the history of the system, and the states can be switched by applied voltage. Memristors show an intense hysteresis that can be characterized in terms of the emergence of inductive components.

Hysteresis control of halide perovskite solar cells. Moving from frequency to time domain and back

Fall 2022 abstracts, posters, and presentations will launch in mid-September.

ACS Fall 2022

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.