RT Journal Article
T1 Inverted Hysteresis in n-i-p and p-i-n Perovskite Solar Cells
A1 García-Rodríguez, Rodrigo
A1 Riquelme Expósito, Antonio Jesús
A1 Cowley, Matthew
A1 Valadez-Villalobos, Karen
A1 Oskam, Gerko
A1 Bennett, Laurence J.
A1 Wolf, Matthew J.
A1 Contreras Bernal, Lidia
A1 Cameron, Petra J.
A1 Walker, Alison B.
A1 Anta, Juan
K1 Metal-halide perovskites
K1 Drift-diffusion simulation
AB A combination of experimental studies and drift-diffusion modeling has been used to investigate the appearance of inverted hysteresis, where the area under the J-V curve for the reverse scan is lower than in the forward scan, in perovskite solar cells. It is found that solar cells in the p-i-n configuration show inverted hysteresis at a sufficiently high scan rate, whereas n-i-p solar cells tend to have normal hysteresis. By examining the influence of the composition of charge transport layers, the perovskite film crystallinity and the preconditioning treatment, the possible causes of the presence of normal and inverted hysteresis are identified. Simulated current-voltage measurements from a coupled electron-hole-ion driftdiffusion model that replicate the experimental hysteresis trends are presented. It is shown that during current-voltage scans, the accumulation and depletion of ionic charge at the interfaces modifies carrier transport within the perovskite layer and alters the injection and recombination of carriers at the interfaces. Additionally, it is shown that the scan rate dependence of the degree of hysteresis has a universal shape, where the crossover scan rate between normal and inverted hysteresis depends on the ion diffusion coefficient and the nature of the transport layers.
PB Wiley
SN 2194-4296
YR 2022
FD 2022-08-24
LK http://hdl.handle.net/10433/14643
UL http://hdl.handle.net/10433/14643
LA en
NO Energy Technology (2022),  2200507
NO Universidad Pablo Olavide. Departamento de Sistemas Físicos, Químicos y Naturales
DS RIO
RD May 22, 2026