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Proceedings Paper

Competitive hybridization in quantum dot-based nanodevices
Author(s): Katawoura Beltako; Nicolas Cavassilas; Fabienne Michelini
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Paper Abstract

By means of nonequilibrium Green's functions using the Born approximation to treat the light-matter coupling, we numerically investigate impacts of competitive hybridization on the photocurrent of a quantum dot based optoelectronic device. The model of device is an absorbing quantum dot connected to two semiconducting electrodes through energy filtering quantum dots. Hybridization occurs between the absorber and the filter, via the inter-dot coupling β, and between the filter and the electrode, via the dot-lead coupling Γ. At the tunnel resonance between the absorber and the filter, the investigation reveals the existence of two operating regimes in the nanodevice characterized by opposite variations of the photocurrent depending on ratio β/ Γ.

Paper Details

Date Published: 14 March 2016
PDF: 6 pages
Proc. SPIE 9743, Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V, 97431E (14 March 2016); doi: 10.1117/12.2212635
Show Author Affiliations
Katawoura Beltako, Institut Matériaux Microélectronique Nanosciences de Provence (France)
Nicolas Cavassilas, Institut Matériaux Microélectronique Nanosciences de Provence (France)
Fabienne Michelini, Institut Matériaux Microélectronique Nanosciences de Provence (France)


Published in SPIE Proceedings Vol. 9743:
Physics, Simulation, and Photonic Engineering of Photovoltaic Devices V
Alexandre Freundlich; Laurent Lombez; Masakazu Sugiyama, Editor(s)

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