Optical properties of excitons in metal-insulator-semiconductor nanowires

The theoretical model for the metal-insulator-semiconductor nanowires is established and the optical properties are investigated. The linear absorption of the hybrid excitons, formed due to the exciton-plasmon interaction, shows obvious red shift on the magnitude of several meVs. The mechanism of th...

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Bibliographic Details
Published in:Optics express 2013-10, Vol.21 (21), p.25607-25618
Main Author: Yan, Jie-Yun
Format: Article
Language:English
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Summary:The theoretical model for the metal-insulator-semiconductor nanowires is established and the optical properties are investigated. The linear absorption of the hybrid excitons, formed due to the exciton-plasmon interaction, shows obvious red shift on the magnitude of several meVs. The mechanism of the red shift is found to be the joint action of the increased excitonic binding energy attributed to the indirect Coulomb interaction and the decreased effective bandgap caused by the additional self-energy potential. The conclusion is also supported by the evolution of the absorption spectra with the adjustable structural parameters.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.21.025607