Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle
Journal article, 2018

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.


Mikhail V. Zyuzin

ITMO University

Philipps University Marburg

Denis Baranov

ITMO University

Chalmers, Physics, Bionanophotonics

Moscow Institute of Physics and Technology

Alberto Escudero

Philipps University Marburg

University of Seville

Indranath Chakraborty

Philipps University Marburg

Anton Tsypkin

ITMO University

Elena V. Ushakova

ITMO University

Florain Kraus

Philipps University Marburg

Wolfgang J. Parak

University of Hamburg

Philipps University Marburg

S. Makarov

ITMO University

Scientific Reports

2045-2322 (ISSN)

Vol. 8 1 6107

Subject Categories

Atom and Molecular Physics and Optics

Other Physics Topics

Condensed Matter Physics



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