Plasmon-exciton coupling in nanostructured metal-semiconductor composite films

Viktoriia V. Savchuk; Roman V. Gamernyk; Ihor S. Virt; Serhiy Z. Malynych; Anatoliy O. Pinchuk

doi:10.1063/1.5090900

AIP Advances (Apr 2019)

Plasmon-exciton coupling in nanostructured metal-semiconductor composite films

Viktoriia V. Savchuk,
Roman V. Gamernyk,
Ihor S. Virt,
Serhiy Z. Malynych,
Anatoliy O. Pinchuk

Affiliations

Viktoriia V. Savchuk: Department of Physics and Energy Sciences, University of Colorado Colorado Springs, and Center for Biofrontiers Institute, University of Colorado, 1420 Austin Bluffs Parkway 80918, Colorado Springs, Colorado, USA
Roman V. Gamernyk: Department of Physics, Ivan Franko National University of Lviv, 79005 Lviv, Ukraine
Ihor S. Virt: Department of Engineering Science and Technology, Ivan Franko Drogobych State Pedagogical University, 82106 Drogobych, Ukraine
Serhiy Z. Malynych: Department of Electromechanics and Electronics, Hetman Petro Sahaidachnyi National Army Academy, 79012 Lviv, Ukraine
Anatoliy O. Pinchuk: Department of Physics and Energy Sciences, University of Colorado Colorado Springs, and Center for Biofrontiers Institute, University of Colorado, 1420 Austin Bluffs Parkway 80918, Colorado Springs, Colorado, USA

DOI: https://doi.org/10.1063/1.5090900
Journal volume & issue: Vol. 9, no. 4
pp. 045021 – 045021-6

Abstract

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Nonlinear optical response of metal-semiconductor Zn0.8Co0.2O/Au nanocomposite films was studied experimentally and theoretically. Z-scan measurements revealed a positive nonlinear index of refraction of the composite film. Fluorescent spectroscopy measurements exhibited a narrow sharp peak that might be attributed to exciton peak of semiconductor nanostructured thin film enhanced by nearby gold nanoparticles. Classical electrodynamic calculations of a quantum dot in close proximity to a gold nanoparticle agree well with the experimentally observed normalized quantum efficiency.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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