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Proceedings Paper

Light trapping in thin-film silicon solar cells with photonic structures
Author(s): Lucio Claudio Andreani; Angelo Bozzola; Piotr Kowalczewski; Marco Liscidini
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Paper Abstract

Efficient photovoltaic conversion of solar energy requires optimization of both light absorption and carrier collection. This manuscript reviews theoretical studies of thin-film silicon solar cells with various kinds of ordered and disordered photonic structures. Light trapping capabilities of these systems are analyzed by means of rigorous coupled-wave analysis and compared with the so-called Lambertian limit as given by a fully randomizing light scatterer. The best photonic structures are found to require proper combinations of order and disorder, and can be fabricated starting from pre-patterned rough substrates. Carrier collection is studied by means of analytic models and by full electro-optical simulations. The results indicate that thin-film silicon solar cells can outperform bulk ones with comparable material quality, provided surface recombination is kept below a critical level, which is compatible with present-day surface passivation technologies.

Paper Details

Date Published: 2 May 2014
PDF: 10 pages
Proc. SPIE 9127, Photonic Crystal Materials and Devices XI, 91270M (2 May 2014); doi: 10.1117/12.2054521
Show Author Affiliations
Lucio Claudio Andreani, Univ. of Pavia (Italy)
Angelo Bozzola, Univ. of Pavia (Italy)
Piotr Kowalczewski, Univ. of Pavia (Italy)
Marco Liscidini, Univ. of Pavia (Italy)

Published in SPIE Proceedings Vol. 9127:
Photonic Crystal Materials and Devices XI
Sergei G. Romanov; Gabriel Lozano; Dario Gerace; Christelle Monat; Hernán Ruy Míguez, Editor(s)

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