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Proceedings Paper

The optical near-field of randomly textured light trapping structures for thin-film solar cells
Author(s): T. Beckers; K. Bittkau; C. Rockstuhl; S. Fahr; F. Lederer; R. Carius
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Paper Abstract

Randomly textured zinc oxide surfaces with and without amorphous silicon deposited on top are studied by near-field scanning optical microscopy. By virtue of a three dimensions it allows to access the local light intensity in the entire spatial domain above the structures. Measurements are compared with large scale finite-difference time-domain simulations. This study provides new insight into light trapping in thin-film silicon solar cells on a nanoscopic scale. Light localization on the surface of the textured interface and a focusing of light by the structure further away are observed as the key features characteristic for such surfaces.

Paper Details

Date Published: 5 May 2008
PDF: 7 pages
Proc. SPIE 7002, Photonics for Solar Energy Systems II, 70020D (5 May 2008); doi: 10.1117/12.781121
Show Author Affiliations
T. Beckers, Forschungszentrum Jülich GmbH (Germany)
K. Bittkau, Forschungszentrum Jülich GmbH (Germany)
C. Rockstuhl, Friedrich-Schiller-Univ. Jena (Germany)
S. Fahr, Friedrich-Schiller-Univ. Jena (Germany)
F. Lederer, Friedrich-Schiller-Univ. Jena (Germany)
R. Carius, Forschungszentrum Jülich GmbH (Germany)


Published in SPIE Proceedings Vol. 7002:
Photonics for Solar Energy Systems II
Andreas Gombert, Editor(s)

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