[9a-W621-1~12] 3.12 Nanoscale optical science and near-field optics

△ [9a-W621-8] Comparison of Photoluminescence Enhancement between Plasmonic and Non-plasmonic Nanocylinder Arrays

〇(M1)Kazuki Noguchi¹, Shunsuke Murai^1,2, Katsuhisa Tanaka¹ (1.Kyoto U., 2.JST-PRESTO)

Keywords:plasmonics, nanocylinder arrays, photoluminescence enhancement

In order to avoid large absorption losses of metal and deactivation of luminescent center due to energy transfer from luminescent center to metal, recently, there is a trend to change material of nanostructure from metal to dielectric. However, there are not many reports that experimentally compare photoluminescence (PL) enhancement between plasmonic and non-plasmonic arrays. In this study, we compared the PL enhancement by Al, Ag nanocylinder arrays exhibit SPPs absorption in visible region with PL enhancement by Si, TiO₂ nanocylinder arrays exhibit high refractive index and low absorption losses in visible region.