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.
Author
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) 20452322 (eISSN)
Vol. 8 1 6107Subject Categories
Atom and Molecular Physics and Optics
Other Physics Topics
Condensed Matter Physics
DOI
10.1038/s41598-018-24492-y