Solvent vapor annealing is a post-processing technique used to improve the morphology and performance of organic photovoltaic materials by exposing them to solvent vapors, allowing the film to reorganize and enhance crystallinity. This technique promotes the desired phase separation in donor-acceptor systems, which is crucial for optimizing charge transport and overall device efficiency. By fine-tuning the processing conditions, solvent vapor annealing can significantly impact the structural properties and electrical characteristics of the materials involved.
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