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Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle

Zyuzin, Mikhail V ; Baranov, Denis G ; Escudero, Alberto ; Chakraborty, Indranath ; Tsypkin, Anton ; Ushakova, Elena V ; Kraus, Florain ; Parak, Wolfgang J ; Makarov, Sergey V

Scientific reports, 2018-04, Vol.8 (1), p.6107-7, Article 6107 [Peer Reviewed Journal]

England: Nature Publishing Group

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  • Title:
    Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle
  • Author: Zyuzin, Mikhail V ; Baranov, Denis G ; Escudero, Alberto ; Chakraborty, Indranath ; Tsypkin, Anton ; Ushakova, Elena V ; Kraus, Florain ; Parak, Wolfgang J ; Makarov, Sergey V
  • Subjects: Luminescence ; Nanoparticles ; Photons ; Silicon
  • Is Part Of: Scientific reports, 2018-04, Vol.8 (1), p.6107-7, Article 6107
  • Notes: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
  • Description: Luminescent 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: England: Nature Publishing Group
  • Language: English
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