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25 September 2017 Integrating quantum-dots and Mie resonators into a 2D metamaterial for sunlight downconversion (Conference Presentation)
Antonio Capretti, Arnon Lesage, Tom Gregorkiewicz
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Proceedings Volume 10343, Metamaterials, Metadevices, and Metasystems 2017; 1034315 (2017) https://doi.org/10.1117/12.2272440
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States
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.
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Antonio Capretti, Arnon Lesage, and Tom Gregorkiewicz "Integrating quantum-dots and Mie resonators into a 2D metamaterial for sunlight downconversion (Conference Presentation)", Proc. SPIE 10343, Metamaterials, Metadevices, and Metasystems 2017, 1034315 (25 September 2017); https://doi.org/10.1117/12.2272440
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KEYWORDS
Absorption
Metamaterials
Dielectrics
Resonators
Nanocrystals
Quantum dots
Semiconductors
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