Related Experiment Video
Updated: Apr 7, 2026

Integrating a Triplet-triplet Annihilation Up-conversion System to Enhance Dye-sensitized Solar Cell Response to Sub-bandgap Light
Published on: September 12, 2014
Enhanced triplet-triplet annihilation in bicomponent organic systems by using a gap plasmon resonator
Jun Kue Park1, Gi Yong Lee, Kinam Jung
1Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea. kohd94@kist.re.kr.
Abstract:
The triplet-triplet annihilation (TTA) efficiency in bicomponent organic systems is investigated by employing a gap plasmon resonator. In our structure, strong absorption peaks arising from coupling between localized surface plasmons and surface plasmon polaritons closely overlap the Q band of porphyrin, leading to higher triplet concentrations within the film. We find that at ultralow excitation intensities on the order of watts per square centimeter (W cm(-2)), TTA becomes predominant for the organic system on a gap plasmon resonator. A strong surface-enhanced Raman scattering intensity is observed in this substrate, verifying the near-field enhancement.
Related Concept Videos
Double Resonance Techniques: Overview
Spin decoupling is usually achieved by...
¹H NMR: Complex Splitting
Splitting diagrams or splitting tree diagrams are routinely used to depict such complex couplings. While drawing splitting diagrams, the splitting with the larger coupling constant is usually applied...
Electron Paramagnetic Resonance (EPR) Spectroscopy: Organic Radicals

