Park, Jun Kue Lee, Gi Yong Jung, Kinam Ko, Doo-Hyun Han, Il Ki Ko, Hyungduk 2024-01-20T06:32:07Z 2024-01-20T06:32:07Z 2021-09-05 2015-08 2040-3364 https://pubs.kist.re.kr/handle/201004/125165 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 ultra-low 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. English ROYAL SOC CHEMISTRY PHOTON UP-CONVERSION RAMAN-SCATTERING SURFACE POLARITONS PORPHYRIN NANOSTRUCTURES FLUORESCENCE EXCITATION SPECTRA ARRAY Enhanced triplet-triplet annihilation in bicomponent organic systems by using a gap plasmon resonator Article 10.1039/c5nr02813b 1 NANOSCALE, v.7, no.30, pp.12828 - 12832 NANOSCALE 7 30 12828 12832 scie scopus 000358615200007 2-s2.0-84937821816 Chemistry, Multidisciplinary Nanoscience & Nanotechnology Materials Science, Multidisciplinary Physics, Applied Chemistry Science & Technology - Other Topics Materials Science Physics Article PHOTON UP-CONVERSION RAMAN-SCATTERING SURFACE POLARITONS PORPHYRIN NANOSTRUCTURES FLUORESCENCE EXCITATION SPECTRA ARRAY