Increased mc-Si module efficiency using fluorescent organic dyes: A ray-tracing study
Date
2006
Authors
McIntosh, Keith
Richards, Bryce
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OmniPress
Abstract
Ray tracing is used to determine how the inclusion of BASF's fluorescent organic dyes might benefit a multicrystalline silicon module. These dyes absorb shortwavelength photons and re-emit them at wavelengths that are longer and more favourable to the module. This down-shifting prevents many photons from being absorbed by the ethylene vinyl acetate (EVA) encapsulant, the cells' antireflective coating, and the "dead layer" of the cells' emitter. We find that under one-sun AM1.5g illumination, the inclusion of organic dyes might raise the short-circuit current density by as much as 0.7 mA/cm 2, which equates to an efficiency boost of 0.3% absolute. A further increase of 0.1 mA/cm2 is attained by thickening the antireflective coating so that it is optimised for the new spectrum. It is shown that the incorporation of fluorescent dyes slightly increases the optimal emitter doping of the solar cells.
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Keywords
Keywords: Antireflection coatings; Current density; Dyes; Photons; Ethylene vinyl acetate (EVA); Multicrystalline silicon; Organic dyes; Silicon solar cells
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Source
Proceedings of the World Conference on Photovoltaic Energy Conversion 2006
Type
Conference paper
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Restricted until
2037-12-31
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