[14p-313-1~17] 12.1 Fabrications and Structure Controls

△ [14p-313-11] Highly enhanced emission in core-dual shell type hybridized nanoparticles

〇(M1)Naonari Sakamoto¹, Tsunenobu Onodera¹, Takuma Dezawa², Yutaka Shibata², Hidetoshi Oikawa¹ (1.IMRAM, Tohoku Univ., 2.Graduate School of Science, Tohoku Univ)

Keywords:enhanced emission, hybridized nanoparticles, gap mode plasmon

We have fabricated successfully core-dual shell type hybridized nanoparticles (NPs) having Au-core/dye-doped silica shell/Au shell (densely deposited Au NPs). The resulting NPs exhibited evidently the about 20-folds enhancement of fluorescence intensity, increase in fluorescence quantum yield, and decrease in fluorescence lifetime, compared with the referred NPs, due to optical electric-fields enlarged by localized surface plasmon resonance coupling interaction in core-dual shell type nanostructure. More detailed elucidation concerning enhancement mechanism would provide the possibility of photonic device application as a high-performance point light source in the near future.