Pushing the boundaries of nanocrystal optoelectronics with structured photonic environments

Aloyse Degiron

doi:10.1117/12.3001888

9 March 2024 Pushing the boundaries of nanocrystal optoelectronics with structured photonic environments

Aloyse Degiron

Proceedings Volume PC12895, Quantum Sensing and Nano Electronics and Photonics XX; PC128950X (2024) https://doi.org/10.1117/12.3001888
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Colloidal semiconducting nanocrystals (NCs) offer attractive opportunities for optoelectronics. They can self-assemble into solid compact layers and their properties can be adjusted with great flexibility to address frequency windows that are otherwise difficult and/or expensive to cover with standard semiconductors. In this talk, we will discuss the emission and absorption of near-infrared PbS NC assemblies and show that carrier thermalization among neighboring NCs govern their properties (such as the precise Stokes shift between absorption and emission, the shape of the spectra, the wavevector distribution, the carrier recombination rate…). Then we will use this insight to demonstrate unconventional optoelectronic devices in which ensembles of PbS nanocrystals are weakly coupled to tailored photonic environments, such as incoherent sources emitting light with broadband phase and/or polarization singularities. Funding: European Research Council grant FORWARD (reference: 771688).

Conference Presentation

Citation Download Citation

Aloyse Degiron "Pushing the boundaries of nanocrystal optoelectronics with structured photonic environments", Proc. SPIE PC12895, Quantum Sensing and Nano Electronics and Photonics XX, PC128950X (9 March 2024); https://doi.org/10.1117/12.3001888

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