Title
Universal control strategy for anomalous ionic-electronic phenomenology in perovskite solar cells efficiency measurements
Author
Hernández-Balaguera, E.
Munoz-Díaz, L.
Pereyra, C.
Lira-Cantu, M.
Najafi, M.
Galagan, Y.
Publication year
2022
Abstract
The unprecedented increase of photovoltaic perovskites performance metrics has been obscured by the puzzling phenomenology underlying the device's anomalous ionic/electronic landscape. Thus, the establishment of a reliable measurement protocol of efficiency measurements, unanimously adopted by the perovskite's community, is indeed necessary to ensure comparability of device performance between different research laboratories. Here, we report a control strategy of ionic-electronic cooperative relaxation phenomena, eliminating the “hysteria around hysteresis”. The procedure, based on mixed engineering strategies, solves the problem that arises from the difficulty of providing steady-state device operation conditions, capturing in turn the anomalous capacitive behavior. From the determination of an optimal scan rate for JeV modeling, we provide an experimental visualization of the interplay between perovskites' ionic and electronic responses. The results of this combined theoretical and experimental study identify key guidelines about assessment procedural of device performance that should be taken into account in future publications to further improve reproducibility in the research field.
Subject
Metal halide perovskites
JeV hysteresis
Device performance assessment
Impedance spectroscopy
Transient analysis
To reference this document use:
http://resolver.tudelft.nl/uuid:a8f31ac5-5f24-4264-ab4d-05f48806236e
DOI
https://doi.org/doi:j.mtener.2022.101031/
TNO identifier
972428
Publisher
Elsevier
ISSN
2468-6069
Source
Materials Today Energy
Document type
article