Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle

摘要: Luminescent molecules attached to resonant colloidal particles are an important tool study light-matter interaction. A traditional approach enhance the photoluminescence intensity of luminescent in such conjugates is incorporate spacer-coated plasmonic nanoantennas, where spacer prevents intense non-radiative decay molecules. Here, we explore capabilities alternative platform for enhancement, which based on low-loss Mie-resonant silicon particles. We demonstrate that spherical shape more efficient enhancement than their counterparts in spacer-free configuration. Our theoretical calculations show significant originates from larger quantum yields supported by and features. results prove potential high-index dielectric spacer-free photoluminescence, potentially could be a future bioimaging nanolasers.