Controlling light emission by a thermalized ensemble of colloidal quantum dots with a metasurface
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Date
2023-01-30
Publication Type
Journal Article
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Abstract
We report an experimental and theoretical study of light emission by a patterned ensemble of colloidal quantum dots (cQDs). This system modifies drastically the emission spectrum and polarization as compared to a planar layer of cQDs. It exhibits bright, directional and polarized emission including a degree of circular polarization in some directions. We introduce a model of light emission based on a local Kirchhoff law which reproduces accurately all the features of the experiment. The model provides a figure of merit to assess quantitatively the emitted power. This work paves the way to the systematic design of efficient ultrathin light emitting metasurfaces with controlled polarization, spectrum and directivity.
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published
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31 (3)
Pages / Article No.
4851 - 4861
Publisher
Optica
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03875 - Norris, David J. / Norris, David J.
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Funding
165559 - Optical Strong Coupling in Colloidal Quantum Dots (SNF)
161243 - Multiresonant Bull's Eyes for Plasmonic Surface Enhancement (SNF)
161243 - Multiresonant Bull's Eyes for Plasmonic Surface Enhancement (SNF)