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Proceedings Paper

Integrating quantum-dots and Mie resonators into a 2D metamaterial for sunlight downconversion (Conference Presentation)
Author(s): Antonio Capretti; Arnon Lesage; Tom Gregorkiewicz

Paper Abstract

Dielectric Mie resonators and quantum-confined semiconductors enable an unrivaled control over light absorption and excited electrons. Here, we embed photoluminescent silicon nanocrystals into a planar array of SiO2 nanocylinders, and experimentally demonstrate a powerful concept: the resulting metamaterial preserves the nanocrystal radiative properties and inherits the spectrally-selective absorption properties of the nanocylinders. This hierarchical approach provides increased photoluminescence intensity without plasmonic components. This spectral selectivity of absorption paves the way for an effective light down-conversion scheme to increase the efficiency of solar cells. The demonstrated principle is general and can be applied to other semiconductor quantum dots, ions or molecules.

Paper Details

Date Published: 25 September 2017
Proc. SPIE 10343, Metamaterials, Metadevices, and Metasystems 2017, 1034315 (25 September 2017); doi: 10.1117/12.2272440
Show Author Affiliations
Antonio Capretti, Univ. van Amsterdam (Netherlands)
Arnon Lesage, Univ. van Amsterdam (Netherlands)
Tom Gregorkiewicz, Univ. van Amsterdam (Netherlands)

Published in SPIE Proceedings Vol. 10343:
Metamaterials, Metadevices, and Metasystems 2017
Nader Engheta; Mikhail A. Noginov; Nikolay I. Zheludev, Editor(s)

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