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Proceedings Paper

Nano-optical concept design for light management
Author(s): M. Schmid; S. Tsakanikas; G. Mangalgiri; P. Andrae; M. Song; G. Yin; W. Riedel; P. Manley
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Paper Abstract

Efficient light management in optoelectronic devices requires nanosystems where high optical qualities coincide with suitable device integration. The requirement of chemical and electrical passivation for integrating nanostrutures in e.g. thin film solar cells points towards the use of insulating and stable dielectric material, which however has to provide high scattering and near-fields as well. We investigate metal@dielectric core-shell nanoparticles and dielectric nanorods. Whereas core-shell nanoparticles can be simulated using Mie theory, nanorods of finite length are studied with the finite element method. We reveal that a metallic core within a thin dielectric shell can help to enhance scattering and near-field cross sections compared to a bare dielectric nanoparticle of the same radius. A dielectric nanorod has the benefit over a dielectric nanosphere in that it can generate much higher scattering cross sections and also give rise to a high near-field enhancement along its whole length. Electrical benefits of e.g. Ag@oxide nanoparticles in thin-film solar cells and ZnO nanorods in hybrid devices lie in reduction of recombination centers or close contact of the nanorod material with the surrounding organics, respectively. The optical benefit of dielectric shell material and elongated dielectric nanostructures is highlighted in this paper.

Paper Details

Date Published: 23 September 2015
PDF: 7 pages
Proc. SPIE 9626, Optical Systems Design 2015: Optical Design and Engineering VI, 96260E (23 September 2015); doi: 10.1117/12.2191081
Show Author Affiliations
M. Schmid, Helmholtz-Zentrum Berlin (Germany)
Freie Univ. Berlin (Germany)
S. Tsakanikas, Helmholtz-Zentrum Berlin (Germany)
G. Mangalgiri, Helmholtz-Zentrum Berlin (Germany)
P. Andrae, Helmholtz-Zentrum Berlin (Germany)
Freie Univ. Berlin (Germany)
M. Song, Helmholtz-Zentrum Berlin (Germany)
Freie Univ. Berlin (Germany)
G. Yin, Helmholtz-Zentrum Berlin (Germany)
W. Riedel, Freie Univ. Berlin (Germany)
Helmholtz-Zentrum Berlin (Germany)
P. Manley, Helmholtz-Zentrum Berlin (Germany)


Published in SPIE Proceedings Vol. 9626:
Optical Systems Design 2015: Optical Design and Engineering VI
Laurent Mazuray; Rolf Wartmann; Andrew P. Wood, Editor(s)

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