ArticleACS applied materials & interfaces2025
Permeation Barriers Grown by Atomic Layer Deposition Endow Non-Fullerene Organic Solar Cells with Damp-Heat Resilience.
Article in ACS applied materials & interfaces, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Organic solar cells (OSCs) based on nonfullerene acceptors have seen tremendous progress recently, which qualifies them as a serious next-generation photovoltaic technology. However, their long-term stability is still a key issue that needs to be addressed on the way to commercialization. For relevant long-term stability, gas diffusion barriers are needed to protect the OSCs against ambient gases such as oxygen and moisture. Here, we explore gas diffusion barriers grown by atomic layer deposition (ALD) and demonstrate that aluminum oxide barriers grown at 80 °C afford OSCs that can be operated in the maximum power point in ambient air for more than 1000 h without notable degradation. At the same time, we show that under damp heat conditions, i.e., elevated temperature and humidity, better barriers are needed, that require growth temperatures of >80 °C, which are not tolerated by our standard
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