Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
DOI: https://doi.org/10.29363/nanoge.matsus.2024.027
Publication date: 18th December 2023
The performance optimization of organic solar cells is influenced not only by the design of the molecular structures but also by the regulation of the blend morphologies. Currently, there is a well-established understanding of how material design can regulate energy levels, film absorption, carrier mobility, and molecular crystallinity, leading to efficient device performance through the aggregation regulation of active layers. However, there is a lack of effective methods and investigations on the regulation of the metastable state of the active layer, the analysis of degradation mechanisms, and the improvement of operational stability. At present, organic solar cells are not only facing the basic problem of unclear metastable decay mechanism, but also facing the important challenge of synergistic development of "efficiency and stability". The development of physical and chemical methods of metastable regulation is an important breakthrough point for future work. On the basis of levelized cost of electricity analysis, this report will briefly indicate the performance requirements of organic photovoltaic materials and a brief analysis of performance improvement strategies and introduce the metastable morphology characteristics of active layer. By analyzing and revealing the attenuation mechanism of metastable morphology, combined with the intrinsic characteristics of small molecule materials, this report is used to understand the morphologic changes of the active layer under light/thermal stress, and explore the physical attenuation dynamics. Finally, the recent progress made by our research group in regulating the metastable state through physical and chemical methods, as well as the coupling strategies employed. This report aims to provide theoretical support for a deeper understanding of the mechanisms behind metastable morphology attenuation, and to offer valuable references for fellow researchers in the field.
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Previously nanoGe Spring Meeting (NSM) and nanoGe Fall Meeting (NFM), MATSUS is a multiple symposia conference focused on a broad set of topics of advanced materials preparation, their fundamental properties, and their applications, in fields such as renewable energy, photovoltaics, lighting, semiconductor quantum dots, 2-D materials synthesis, charge carriers dynamics, microscopy and spectroscopy semiconductors fundamentals, etc.
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