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Proceedings Paper

Fundamental optical simulations of light trapping in microcrystalline silicon thin-film solar cells
Author(s): C. Haase; H. Stiebig
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Paper Abstract

Thin-film silicon solar cells require an effective light trapping and a low reflectivity over the entire sun spectrum. As the optics in thin-film devices is not understood in detail optical simulations can be a useful tool to investigate the wave propagation in textured layer stacks. For microcrystalline (μc-Si:H) and amorphous (a-Si:H) silicon solar cells transparent conductive oxides (ZnO) with randomly rough textured interfaces are commonly used to achieve an improved light in-coupling into the cell and light scattering at the rough interfaces. Since periodically textured substrates offer the possibility to design the solar cell in accordance to a waveguide, the solar cells with integrated grating coupler and Bragg reflector gain more and more in importance. To get more insight into light propagation a detailed computational study focusing on the relation of the incoming light wave and the structure size and structure shape of the interface texture is extremely valuable.

Paper Details

Date Published: 12 May 2006
PDF: 9 pages
Proc. SPIE 6197, Photonics for Solar Energy Systems, 619705 (12 May 2006); doi: 10.1117/12.662687
Show Author Affiliations
C. Haase, Forschungszentrum Jülich (Germany)
H. Stiebig, Forschungszentrum Jülich (Germany)

Published in SPIE Proceedings Vol. 6197:
Photonics for Solar Energy Systems
Andreas Gombert, Editor(s)

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