Journal
NANO LETTERS
Volume 17, Issue 11, Pages 6886-6892Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.nanolett.7b03248
Keywords
Silicon nanodisks; quantum emitters; Mie resonances; self-assembled quantum dots; oligomer nanostructures; photoluminescence enhancement
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Funding
- Ministry of Education and Science of the Russian Federation (Minobrnauka) [2.2267.2017/4.6]
- Russian Foundation for Basic Research [16-32-60167, 16-02-00684, 15-02-05272]
- Federal Ministry for Education and Research (Bundesministerium fur Bildung und Forschung) within the Centre for Innovation Competence SiLi-Nano [03Z2HN12]
- Academy of Finland [310753]
- Academy of Finland (AKA) [310753, 310753] Funding Source: Academy of Finland (AKA)
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Resonant dielectric nanostructures represent a promising platform for light manipulation at the nanoscale. In this paper, we describe an active photonic system based on Ge(Si) quantum dots coupled to silicon nanodisks. We show that Mie resonances govern the enhancement of the photo-luminescent signal from embedded quantum dots due to a good spatial overlap of the emitter position with the electric field of Mie modes. We identify the coupling mechanism, which allows for engineering the resonant Mie modes through the interaction of several nanodisks. In particular, the mode hybridization in a nanodisk trimer results in an up to 10-fold enhancement of the luminescent signal due to the excitation of resonant antisymmetric magnetic and electric dipole modes.
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