Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV18)
DOI: https://doi.org/10.29363/nanoge.hopv.2018.134
Publication date: 21st February 2018
Understanding exciton transport in conjugated polymers is a vital goal for research in optoelectronic applications. We show that we have synthesised novel polyfluorene nanofibers with controllable lengths, and that these can be connected to end blocks of different conjugated polymers. We study the exciton transfer in solution from the polyfluorene cores to the lower-energy end-blocks. We measure key parameters such as singlet exciton diffusion length and singlet exciton diffusion coefficient through ultrafast photoluminescence and absorption spectroscopies. The exciton transport is shown to be extremely efficient, made possible by the unique structural properties of the polymer nanofibers.
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