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Paul E. Shaw, Arvydas Ruseckas, Jeffrey Peet, Guillermo C. Bazan and Ifor D. W. Samuel Exciton–Exciton Annihilation in Mixed-Phase Polyfluorene Films Advanced Functional Materials 20

Version of Record online: 20 NOV 2009 | DOI: 10.1002/adfm.200900879

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Exciton diffusion is investigated in polyfluorene (PFO) films containing varying fractions of chains in the β-phase conformation through measurements of the exciton–exciton annihilation rate. The annihilation rate is found to gradually increase with increasing β-phase fraction, indicating that exciton diffusion is faster in the β-phase than in the glassy phase. The trend is consistent with β-phase chains uniformly dispersed throughout the glassy phase.

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