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Proceedings Paper

Optical modeling of amorphous silicon-based solar cells on flat and textured substrates
Author(s): Guoqiao Tao; J. W. Metselaar
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Paper Abstract

In the course of developing amorphous silicon based solar cells, it is very important to know the profile of photo-generation rate in the device. This profile is strongly dependent on the optical properties of all the layers, the interface properties, and the incident light spectrum. In the case of a solar cell with flat interfaces, the interference effect at long wavelengths should be taken into account. The light absorption can be optimized at a certain layer thickness. However, in the case of a solar cell with a textured substrate, the problem becomes more complicated since light will be scattered at several rough interfaces. We have studied the light scattering at the rough interfaces in typical amorphous silicon solar cells, developed a computer model to simulate the optical behavior of a multi-layer system with rough interface and simulated amorphous silicon based solar cells with different structures: glass/TCO/pin(a- Si:H)/Ag, glass/TCO/pin(a-Si:H)/pin(a-Si:H)/Ag, glass/TCO/pin(a-Si:H)/TCO/Ag, and ITO/pin(a-Si:H)/TCO/Ag. In this paper, we present the method and the results of our optical modeling of amorphous silicon based solar cells. This modeling is performed for cells with flat or textured substrates.

Paper Details

Date Published: 23 August 1995
PDF: 9 pages
Proc. SPIE 2531, Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV, (23 August 1995); doi: 10.1117/12.217332
Show Author Affiliations
Guoqiao Tao, Delft Univ. of Technology (Netherlands)
J. W. Metselaar, Delft Univ. of Technology (Netherlands)

Published in SPIE Proceedings Vol. 2531:
Optical Materials Technology for Energy Efficiency and Solar Energy Conversion XIV
Carl M. Lampert; Satyen K. Deb; Claes-Goeran Granqvist, Editor(s)

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