The optical near-field of randomly textured light trapping structures for thin-film solar cells

T. Beckers; K. Bittkau; C. Rockstuhl; S. Fahr; F. Lederer; R. Carius

doi:10.1117/12.781121

5 May 2008 The optical near-field of randomly textured light trapping structures for thin-film solar cells

T. Beckers, K. Bittkau, C. Rockstuhl, S. Fahr, F. Lederer, R. Carius

Proceedings Volume 7002, Photonics for Solar Energy Systems II; 70020D (2008) https://doi.org/10.1117/12.781121
Event: SPIE Photonics Europe, 2008, Strasbourg, France

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.

Citation Download Citation

T. Beckers, K. Bittkau, C. Rockstuhl, S. Fahr, F. Lederer, and R. Carius "The optical near-field of randomly textured light trapping structures for thin-film solar cells", Proc. SPIE 7002, Photonics for Solar Energy Systems II, 70020D (5 May 2008); https://doi.org/10.1117/12.781121

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