Index matching at the nanoscale: Light scattering by core-shell Si/SiOx nanowires

Leiterer C, Broenstrup G, Jahr N, Talkenberg F, Radnoczi GZ, Pecz B, Christiansen S, Sivakov V (2016)

Publication Type: Journal article

Publication year: 2016

Journal

Nanotechnology Institute of Physics: Hybrid Open Access

Book Volume: 27

Article Number: 435202

Journal Issue: 43

DOI: 10.1088/0957-4484/27/43/435202

Abstract

Silicon nanowires (SiNWs) show strong resonant wavelength enhancement in terms of absorption as well as scattering of light. However, in most optoelectronic device concepts the SiNWs should be surrounded by a contact layer. Ideally, such a layer can also act as an index matching layer which could nearly halve the strong reflectance of light by silicon. Our results show that this reduction can be overcome at the nanometer scale, i.e. SiNWs embedded in a silica (SiOx) layer can not only maintain their high scattering cross sections but also their strong polarization dependent scattering. Such effects can be useful for light harvesting or optoelectronic applications. Moreover, we show that it is possible to optically determine the diameters of the embedded nanoscale silicon (Si) cores.

Involved external institutions

Leibniz-Institut für Photonische Technologien e.V. DE Germany (DE) Helmholtz-Zentrum Berlin für Materialien und Energie (HZB) DE Germany (DE) Hungarian Academy of Sciences / Magyar Tudományos Akadémia (MTA) HU Hungary (HU)

How to cite

APA:

Leiterer, C., Broenstrup, G., Jahr, N., Talkenberg, F., Radnoczi, G.Z., Pecz, B.,... Sivakov, V. (2016). Index matching at the nanoscale: Light scattering by core-shell Si/SiOx nanowires. Nanotechnology, 27(43). https://doi.org/10.1088/0957-4484/27/43/435202

MLA:

Leiterer, Christian, et al. "Index matching at the nanoscale: Light scattering by core-shell Si/SiOx nanowires." Nanotechnology 27.43 (2016).

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