Publication date: 11th March 2026
The operational stability of organic solar cells is strongly governed by degradation processes occurring in the active layer[1]. Degradation studies of active layers in organic solar cells are essential because device stability remains a major limitation of organic photovoltaic technology[2]. In this work, a comparative study of degradation in binary and ternary organic active layers is presented, with a focus on surface and near-surface evolution. The presented research aims to analyze the morphology of both traditional donor: acceptor and ternary active layers (used in so-called ternary solar cells). One of the emerging trends within organic solar cells is the development of ternary solar cells. In ternary organic solar cells (TOSCs), the photoactive layer is created by blending three distinct components. This innovative approach provides numerous opportunities to enhance the power conversion efficiency of the solar cells by expanding the absorption spectrum, optimizing the blend morphology, or fine-tuning the processes involved in exciton splitting and charge extraction. Ternary systems have shown great potential and are regarded as some of the most efficient organic solar cells available today. They are anticipated to play a pivotal role in the future landscape of organic photovoltaics. Research will be conducted on organic thin film layers to assess the impact of external factors, such as atmosphere and lighting, on their structure. This comparative analysis provides insight into the mechanisms governing stability in multicomponent organic active layers and highlights the potential of ternary systems for improving the long-term performance of organic photovoltaic devices.
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