Photoluminescence Properties of Gold Nanorod and J-Aggregate Hybrid Systems Studied by Scanning Near-Field Optical Microscopy

Seiju Hasegawa, Kohei Imura*

*この研究の対応する著者

研究成果: Article査読

抄録

Plasmons excited in metal nanostructures couple strongly with excitons in organic aggregates in the vicinity of the structure. The photoluminescence properties of plasmon-exciton hybrids have been studied, and peak splitting of the photoluminescence has been reported. However, the origin of the splitting is under discussion and remains to be solved. In this study, we investigate the photoluminescence properties of single-gold nanorod and J-aggregate hybrids using dark-field scattering and near-field optical microscopy. We reveal from the dark-field scattering and near-field transmission measurements that the hybrids are under a strong coupling regime. Near-field photoluminescence microscopy demonstrates that photoluminescence enhancement at the hybrid reaches more than 15-fold, and the enhancement is correlated with the reduced damping in the coupled states.

本文言語English
ページ(範囲)5944-5949
ページ数6
ジャーナルJournal of Physical Chemistry C
126
13
DOI
出版ステータスPublished - 2022 4月 7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • エネルギー(全般)
  • 物理化学および理論化学
  • 表面、皮膜および薄膜

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