Communications

Assessment of perovskite solar cells stability under continuous illumination via maximum power point tracking trends analysis

E. I. Marchenko^ab, N. N. Udalova^a, N. A. Belich^a, P. A. Ivlev^a, Ch. Wang^a, Yu. Li^a, E. A. Goodilin^ac, A. B. Tarasov<sup>ac

a</sup> Department of Materials Science, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
^b Department of Geology, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation
^c Department of Chemistry, M. V. Lomonosov Moscow State University, 119991 Moscow, Russian Federation

Abstract: The most common metric of perovskite solar cell stability, namely the time until the device loses 20% of its initial power conversion efficiency (T₈₀), was found to be oversimplified. As a much more reliable tool, a simultaneous analysis of the T₈₀ and T₅₀ metrics can be recommended. This makes it possible to distinguish between the stages of reversible and irreversible degradation of perovskite solar cells by the time until the device loses 20 and 50% of its initial power conversion efficiency, respectively.

Keywords: perovskite solar cells, hybrid halide perovskites, stability, degradation trends, efficiency of devices, continuous irradiation.

Received: 30.04.2025
Accepted: 04.08.2025

Language: English

DOI: 10.71267/mencom.7816

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