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Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
Temperature Dependence of Triplet-Triplet Annihilation Upconversion in Phospholipid Membranes
Sven H C Askes1, Philip Brodie1, Gilles Bruylants2
1Leiden Institute of Chemistry, Gorlaeus Laboratories, Leiden University , P.O. Box 9502, 2300 RA Leiden, The Netherlands.
Abstract:
Understanding the temperature dependency of triplet-triplet annihilation upconversion (TTA-UC) is important for optimizing biological applications of upconversion. Here the temperature dependency of red-to-blue TTA-UC is reported in a variety of neutral PEGylated phospholipid liposomes. In these systems a delicate balance between lateral diffusion rate of the dyes, annihilator aggregation, and sensitizer self-quenching leads to a volcano plot, with the maximum upconversion intensity occurring near the main order-disorder transition temperature of the lipid membrane.
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