Large-area fabrication of nanogap arrays for the enhancement of solid-state photon upconversion

Udai Danyoshi; Kodai Matsumoto; Tomohiro Ryu; Naoyuki Harada; Takeo Nakano; Kiyoshi Miyata; Nobuhiro Yanai; Shigenori Fujikawa; Nobuo Kimizuka

doi:10.1117/12.2644436

17 March 2023 Large-area fabrication of nanogap arrays for the enhancement of solid-state photon upconversion

Udai Danyoshi, Kodai Matsumoto, Tomohiro Ryu, Naoyuki Harada, Takeo Nakano, Kiyoshi Miyata, Nobuhiro Yanai, Shigenori Fujikawa, Nobuo Kimizuka

Author Affiliations +

Proceedings Volume PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII; PC1243113 (2023) https://doi.org/10.1117/12.2644436
Event: SPIE OPTO, 2023, San Francisco, California, United States

Abstract

Metal nanoparticles separated by nanogap spacings generate a significantly enhanced electromagnetic field caused by the light-induced localized surface plasmon resonance. This enhanced electromagnetic field, so-called a hot spot, amplifies the optical absorption and emission of dye molecules in nanogaps. In this study, we fabricated large-area plasmonic Au nanogap arrays with highly integrated hotspots by utilizing the spontaneous nanophase separation of block copolymers. These arrays showed the amplification of upconversion emission based on solid-state triplet-triplet annihilation (TTA-UC).

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Citation Download Citation

Udai Danyoshi, Kodai Matsumoto, Tomohiro Ryu, Naoyuki Harada, Takeo Nakano, Kiyoshi Miyata, Nobuhiro Yanai, Shigenori Fujikawa, and Nobuo Kimizuka "Large-area fabrication of nanogap arrays for the enhancement of solid-state photon upconversion", Proc. SPIE PC12431, Photonic and Phononic Properties of Engineered Nanostructures XIII, PC1243113 (17 March 2023); https://doi.org/10.1117/12.2644436

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