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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
Metal-enhanced up-conversion fluorescence: effective triplet-triplet annihilation near silver surface
Stanislav Baluschev1, Fang Yu, Tzenka Miteva
1Max-Planck-Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany. balouche@mpip-mainz.mpg.de
Abstract:
Up-conversion phenomena are traditionally related to two- or multiphoton processes occurring under relatively high excitation intensities. Here we present the first results of ultralow excitation intensity (in order of Wcm(-2)) continuous-wave (CW) excited up-conversion fluorescence in Kretschmann surface plasmon geometry. The active system is a blue-emitting polymer matrix blended with metalated porphyrine macrocycles. The up-conversion fluorescence is a consequence of a two-particle triplet-triplet annihilation process (TTA).
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