[21a-143-1~11] 【CS.6】 Code-sharing Session of 3.11 & 13.6

[21a-143-5] Control of photoluminescence enhancement and quenching in layered structures of semiconductor quantum dots and metal nanoparticles II

〇Tomoki Narazaki¹, DaeGwi Kim¹ (1.Osaka City Univ.)

Keywords:localized surface plasmon, semiconductor quantum dot, layer-by-layer method

In order to investigate the interaction between semiconductor quantum dots (QDs) and metal nanoparticles (NPs), we fabricated bilayer structures of CdSe QDs and Au NPs by a layer-by-layer method. By varying in-plane density of Au NPs (σ_Au), the photoluminescence (PL) intensity of CdSe QDs was changed greatly. We quantitatively discuss the σ_Au-dependence of both of PL enhancement due to localized surface plasmon and PL quenching due to energy transfer from CdSe QDs to Au NPs.