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12 May 2006 Fundamental optical simulations of light trapping in microcrystalline silicon thin-film solar cells
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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.
© (2006) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
C. Haase and H. Stiebig "Fundamental optical simulations of light trapping in microcrystalline silicon thin-film solar cells", Proc. SPIE 6197, Photonics for Solar Energy Systems, 619705 (12 May 2006); https://doi.org/10.1117/12.662687
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