Proceedings of MATSUS Spring 2025 Conference (MATSUSSpring25)
DOI: https://doi.org/10.29363/nanoge.matsusspring.2025.177
Publication date: 16th December 2024
Perovskite solar cells have exhibited meteoritic growth in their power conversion efficiency (PCE). However, there is a consensus among researchers in the field that the durability of perovskite photovoltaics under real operational conditions still requires considerable improvement. We should identify the dominant degradation mechanisms under multiple stresses in outdoor operation. It is even more complicated due to the well-known (but not still well-understood) metastable day-night dynamics of the perovskite PV. Another key aspect is that PSC degradation rates can strongly depend on electrical bias. We will demonstrate that even mechanisms of such degradation can be different at short-circuit, open-circuit, or maximum power point, for example. Furthermore, we will also report experimental results on the effect of electrical bias on PSC behavior after stress relief, including promoting the recovery process.
Research strategies towards improvement of PSC operational stability exhibiting (at least partially) reversible degradation may include both (1) mitigation of the degradation mechanisms and (2) promotion of the recovery process. Most of the published studies on perovskite PV were aimed at the former strategies. Knowledge about attempts to promote the recovery of perovskite PV is limited. Electrical “therapy” of degraded perovskite solar cells is possible but still should be developed.
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