Photoluminescence quenching of dye molecules near a resonant silicon nanoparticle
Artikel i vetenskaplig tidskrift, 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.
Författare
Mikhail V. Zyuzin
ITMO University
Philipps-Universität Marburg
Denis Baranov
ITMO University
Chalmers, Fysik, Bionanofotonik
Moscow Institute of Physics and Technology
Alberto Escudero
Philipps-Universität Marburg
Universidad de Sevilla
Indranath Chakraborty
Philipps-Universität Marburg
Anton Tsypkin
ITMO University
Elena V. Ushakova
ITMO University
Florain Kraus
Philipps-Universität Marburg
Wolfgang J. Parak
Universität Hamburg
Philipps-Universität Marburg
S. Makarov
ITMO University
Scientific Reports
2045-2322 (ISSN) 20452322 (eISSN)
Vol. 8 1 6107Ämneskategorier
Atom- och molekylfysik och optik
Annan fysik
Den kondenserade materiens fysik
DOI
10.1038/s41598-018-24492-y