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Vygintas Jankus, Edward W. Snedden, Daniel W. Bright, Victoria L. Whittle, J. A. G. Williams and Andy Monkman Energy Upconversion via Triplet Fusion in Super Yellow PPV Films Doped with Palladium Tetraphenyltetrabenzoporphyrin: a Comprehensive Investigation of Exciton Dynamics Advanced Functional Materials 23

Version of Record online: 27 AUG 2012 | DOI: 10.1002/adfm.201201284

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Energy upconversion via triplet fusion is achieved in “super yellow” polymer films doped with sensitizer. The main upconversion efficiency loss mechanism is due to triplet quenching in sensitizer aggregates and this could account for a loss in the range of 76–99%. Preventing sensitizer aggregation in near-infraredto-to-visible upconverting films is crucial and could lead to substantial increase of upconversion efficiencies.

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