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

Institutionen för fysik

ITMO University

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)

Vol. 8 1 6107

Ämneskategorier

Atom- och molekylfysik och optik

Annan fysik

Den kondenserade materiens fysik

DOI

10.1038/s41598-018-24492-y