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Proceedings Paper

Light trapping in thin film silicon solar cells: an assessment
Author(s): Hui Zhao; E. A. Schiff; L. Sivec; J. Yang; S. Guha
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Paper Abstract

We present an approach to estimating the light-trapping of thin film silicon solar cells by comparing the measured quantum efficiency spectrum and the theoretical absorptance spectrum based on ideal diffractive light scattering. The ideal diffractive absorptance enhancement is about 50 in silicon-based cells. We have surveyed published results for many nanocrystalline silicon cells; the largest empirical enhancement is about 25. We discuss the physical mechanisms leading to the reduced quantum efficiencies.

Paper Details

Date Published: 13 September 2011
PDF: 7 pages
Proc. SPIE 8110, Thin Film Solar Technology III, 81100E (13 September 2011); doi: 10.1117/12.893619
Show Author Affiliations
Hui Zhao, Syracuse Univ. (United States)
E. A. Schiff, Syracuse Univ. (United States)
L. Sivec, United Solar Ovonic, LLC (United States)
J. Yang, United Solar Ovonic, LLC (United States)
S. Guha, United Solar Ovonic, LLC (United States)

Published in SPIE Proceedings Vol. 8110:
Thin Film Solar Technology III
Louay A. Eldada, Editor(s)

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