ArticleNature communications2026
Ultralong-range exciton transport in submillimeter-scale spherulite film of π-conjugated polymers.
Article in Nature communications, 2026. 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
Long-range exciton transport in organic semiconductors is essential for the performance of optoelectronic devices. However, solution-processed π-conjugated polymers films typically exhibit short exciton diffusion lengths (<20 nm) due to local imperfections or variations in interchain packing. Here, large-area submillimeter-scale spherulites are achieved by treating the spin-coated polydiarylfluorene film under solvent vapor annealing. The exciton diffusion length, visualized using transient photoluminescence microscopy, is determined to be an average of 186 nm, with a corresponding diffusion coefficient of 0.14 cm
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