Hern?ndez-Balaguera ERomero BArredondo Bdel Pozo GNajafi MGalagan Y.YULIA GALAGAN2021-08-052021-08-05202022112855https://www.scopus.com/inward/record.uri?eid=2-s2.0-85091734659&doi=10.1016%2fj.nanoen.2020.105398&partnerID=40&md5=ce1352d94f6bb03df8795bf75f0fe814https://scholars.lib.ntu.edu.tw/handle/123456789/577041The potential opportunities of perovskite-based technology to further advance in the photovoltaic field and implement an extensive industrial application, will mainly depend on whether some of its weaknesses, such as current density-voltage (J?V) hysteresis, can be overcome. In this sense, a critical aspect is the understanding and the subsequent accurate description of hysteresis in perovskite cells. Here, we present the theoretical underpinnings to interpret non-ideal transient dynamics in stepwise-JV measurements, using electrical analysis strategies and fractional calculus tools. Our model was validated with experimental measurements of CsFAPbIBr-based photovoltaic perovskites of different active layer thicknesses with persistent long-range time photocurrents. It is reported that hysteresis phenomena increase with more pronounced non-ideal capacitive effects suggesting that more trapping events limit ion motion and carrier transport. Our main interest is to provide valuable information about the memory-based slow timescale dynamics, which exhibits a significant impact on the appearance of hysteresis and, to a large extent, on the operation of the solar cell. ? 2020 Elsevier LtdCalculations; Hysteresis; Perovskite; Active Layer; Capacitive effect; Electrical analysis; Fractional calculus; Hysteresis phenomenon; Measurements of; Photovoltaic; Transient dynamics; Perovskite solar cells[SDGs]SDG7journal article10.1016/j.nanoen.2020.1053982-s2.0-85091734659