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Title

Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle

AuthorsZyuzin, Mikhail V.; Baranov, Denis G.; Escudero, A. ; Chakraborty, Indranath; Tsypkin, Anton; Ushakova, Elena V.; Kraus, Florain; Parak, Wolfgang J.; Makarov, Sergey V.
Issue Date2018
PublisherNature Publishing Group
CitationScientific Reports, 8: 6107 (2018)
AbstractLuminescent molecules attached to resonant colloidal particles are an important tool to study light-matter interaction. A traditional approach to enhance the photoluminescence intensity of the luminescent molecules in such conjugates is to incorporate spacer-coated plasmonic nanoantennas, where the spacer prevents intense non-radiative decay of the luminescent molecules. Here, we explore the capabilities of an alternative platform for photoluminescence enhancement, which is based on low-loss Mie-resonant colloidal silicon particles. We demonstrate that resonant silicon particles of spherical shape are more efficient for photoluminescence enhancement than their plasmonic counterparts in spacer-free configuration. Our theoretical calculations show that significant enhancement originates from larger quantum yields supported by silicon particles and their resonant features. Our results prove the potential of high-index dielectric particles for spacer-free enhancement of photoluminescence, which potentially could be a future platform for bioimaging and nanolasers
Publisher version (URL)https://doi.org/10.1038/s41598-018-24492-y
URIhttp://hdl.handle.net/10261/164577
DOI10.1038/s41598-018-24492-y
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