Peculiarities of perovskite photovoltaics degradation and how to account for them in stability studies

Degradation of perovskite solar cells is shown to be partly reversible in the dark, which significantly affects the lifetime of the cell under operational conditions. In this contribution, complex interplay between reversible and irreversible degradation is discussed on the basis of indoor illuminat...

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Published in2020 47th IEEE Photovoltaic Specialists Conference (PVSC) pp. 0305 - 0308
Main Authors Khenkin, Mark V., K.M., Anoop, Visoly-Fisher, Iris, Di Giacomo, Francesco, Dogan, Ilker, Patil, Bhushan Ramesh, Turkovic, Vida, Madsen, Morten, Galagan, Yulia, Ulbrich, Carolin, Katz, Eugene A.
Format Conference Proceeding
LanguageEnglish
Published IEEE 14.06.2020
Subjects
Aging
Computer architecture
Degradation
electrical bias
outdoor
Performance evaluation
perovskite solar cell
Photovoltaic cells
recovery
stability
Stability analysis
Thermal stability
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Summary:Degradation of perovskite solar cells is shown to be partly reversible in the dark, which significantly affects the lifetime of the cell under operational conditions. In this contribution, complex interplay between reversible and irreversible degradation is discussed on the basis of indoor illumination-recovery experiments and outdoor exposure to natural diurnal cycle. We demonstrate that both photodegradation and subsequent recovery processes are strongly affected by the electrical bias condition during the aging. Light-induced ion migration and metastable traps formation with different dominance under different biases and at different degradation stages might explain observed features.
DOI:10.1109/PVSC45281.2020.9300576