Publication date: 16th July 2025
Perovskite solar cells are a promising technology for next-generation photovoltaics due to their astonishing values of power conversion efficiency. However, long-term stability remains a critical challenge for the implementation and commercialization of this star photovoltaic material. This study introduces an innovative approach to rapidly evaluate the degradation mechanisms of perovskite solar cells using small amplitude time transient techniques,1,2 supported by Impedance Spectroscopy.3 By analyzing the evolution of the current responses during a voltage sweep under operational conditions (classical method to estimate the device efficiency), our methodology provides comprehensive insights into the effects of ageing and performance variations via physics-based equivalent circuits.1,2,4 The proposed framework enables rapid and accurate assessment of efficiency and stability metrics, potentially offering a valuable tool for regenerating the perovskite samples (reversible degradation) or optimizing device design during fabrication processes (irreversible ageing). Our work contributes to bridging the gap between laboratory-scale research and large-scale deployment of perovskite photovoltaic technology.
Funded by Universidad Rey Juan Carlos, project numbers M3704 and M3712.
- Balaguera, E. H.; Bisquert, J. Accelerating the Assessment of Hysteresis in Perovskite Solar Cells, ACS Energy Lett. 2024, 9, 478-486.
- Balaguera, E. H.; Bisquert, J. Mapping of Internal Ionic/Electronic Transient Dynamics in Current–Voltage Operation of Perovskite Solar Cells, Small 2025, 21, 2409534.
- Guerrero, A.; Bisquert, J.; García-Belmonte, G. Impedance Spectroscopy of Metal Halide Perovskite Solar Cells from the Perspective of Equivalent Circuits, Chem. Rev. 2021, 121, 14430-14484.
- Balaguera, E. H.; Bisquert, J. Negative Transient Spikes in Halide Perovskites, ACS Energy Lett. 2022, 7, 2602-2610.
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