Issue 30, 2015
From the journal:

Nanoscale

Enhanced triplet–triplet annihilation in bicomponent organic systems by using a gap plasmon resonator†

Jun Kue Park,ab   Gi Yong Lee,a   Kinam Jung,a   Doo-Hyun Ko,c   Il Ki Hana  and  Hyungduk Ko*a  

* Corresponding authors

a Nanophotonics Research Center, Korea Institute of Science and Technology, Seoul 136-791, Republic of Korea
E-mail: kohd94@kist.re.kr

b Korea Multi-purpose Accelerator Complex, Korea Atomic Energy Research Institute, Gyeongju 780-904, Republic of Korea

c Department of Applied Chemistry, Kyung Hee University, Yongin 446-701, Republic of Korea

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.

Graphical abstract: Enhanced triplet–triplet annihilation in bicomponent organic systems by using a gap plasmon resonator

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Article information

DOI
https://doi.org/10.1039/C5NR02813B
Article type
Communication
Submitted
30 Apr 2015
Accepted
30 Jun 2015
First published
03 Jul 2015

Nanoscale, 2015,7, 12828-12832

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Enhanced triplet–triplet annihilation in bicomponent organic systems by using a gap plasmon resonator

J. K. Park, G. Y. Lee, K. Jung, D. Ko, I. K. Han and H. Ko, Nanoscale, 2015, 7, 12828 DOI: 10.1039/C5NR02813B

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