Internal structure and quantum efficiency of hybrid metal-dielectric nanoparticles fabricated by femtosecond laser exposure of bi-layer film

Eduard I. Ageev; Sergei V. Koromyslov; Mikhail A. Gremilov; Van A. Gulinian; Dmitry A. Zuev

doi:10.1117/12.2688987

28 November 2023 Internal structure and quantum efficiency of hybrid metal-dielectric nanoparticles fabricated by femtosecond laser exposure of bi-layer film

Eduard I. Ageev, Sergei V. Koromyslov, Mikhail A. Gremilov, Van A. Gulinian, Dmitry A. Zuev

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Proceedings Volume 12773, Nanophotonics and Micro/Nano Optics IX; 127730L (2023) https://doi.org/10.1117/12.2688987
Event: SPIE/COS Photonics Asia, 2023, Beijing, China

Abstract

We demonstrate the creation of hybrid metal-dielectric nanostructures (NPs) using femtosecond-laser exposure of copper-silicon and gold-silicon films. The formation of arrays of nanoparticles takes place in the process of irradiation of a bilayer film along a circular trajectory. The internal structure of the obtained NPs was studied by means of transmission scanning electron microscopy and energy-dispersive X-ray spectroscopy. The resulting hybrid structures represent a mixture of gold and silicon, and both considered systems demonstrate broadband photoluminescence in the range of 450 - 900 nm with a quantum efficiency of up to 1.1%.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

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Eduard I. Ageev, Sergei V. Koromyslov, Mikhail A. Gremilov, Van A. Gulinian, and Dmitry A. Zuev "Internal structure and quantum efficiency of hybrid metal-dielectric nanoparticles fabricated by femtosecond laser exposure of bi-layer film", Proc. SPIE 12773, Nanophotonics and Micro/Nano Optics IX, 127730L (28 November 2023); https://doi.org/10.1117/12.2688987

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KEYWORDS

Gold nanoparticles

Femtosecond phenomena

Internal quantum efficiency

Nanolithography

Quantum efficiency

Fabrication

Metals

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