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New Light Management Concepts for Thin-Film Silicon Solar Cells

Published online by Cambridge University Press:  01 February 2011

Helmut Stiebig
Affiliation:
hstiebig@malibu-solar.de, Malibu GmbH & Co. KG, R&D, Böttcherstr. 7, Bielefeld, D-33609, Germany, -49 521 989288 15
Christian Haase
Affiliation:
c.haase@fz-juelich.de, Forschungszentrum Juelich, IEF-5, Juelich, D-52425, Germany
Silvia Jorke
Affiliation:
s.jorke@fz-juelich.de, Forschungszentrum Juelich, IEF-5, Juelich, D-52425, Germany
Philipp Obermeyer
Affiliation:
P.Obermeyer@fz-juelich.de, Forschungszentrum Juelich, IEF-5, Juelich, D-52425, Germany
Etienne Moulin
Affiliation:
e.moulin@fz-juelich.de, Forschungszentrum Juelich, IEF-5, Juelich, D-52425, Germany
Melanie Schulte
Affiliation:
me.schulte@fz-juelich.de, Forschungszentrum Juelich, IEF-5, Juelich, D-52425, Germany
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Abstract

An efficient utilization of the sun spectrum is a key issue in the field of thin-film silicon solar cell technology. Therefore, different strategies for enhanced light absorption were presented in the last years. In order to achieve a better understanding of light scattering at nanotextured interfaces the optical properties of a large variety of samples were studied. The angle resolved scattering behavior was analyzed by means of a developed ray tracing model. As an alternative to randomly textured substrates, the influence of periodically textured substrates on the light propagation in solar cells was experimentally and numerically studied with respect to improved light in-coupling and light trapping. Based on a deeper understanding a new tandem cell structure with a diffractive element between the top and bottom cell was developed. Finally, the influence of metallic nanoparticles on the cell performance was studied.

Type
Research Article
Copyright
Copyright © Materials Research Society 2008

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