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Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle.


ABSTRACT: 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.

SUBMITTER: Zyuzin MV 

PROVIDER: S-EPMC5904138 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

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Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle.

Zyuzin Mikhail V MV   Baranov Denis G DG   Escudero Alberto A   Chakraborty Indranath I   Tsypkin Anton A   Ushakova Elena V EV   Kraus Florain F   Parak Wolfgang J WJ   Makarov Sergey V SV  

Scientific reports 20180417 1


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  ...[more]

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