Journal
SOLAR ENERGY
Volume 122, Issue -, Pages 76-86Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.solener.2015.07.049
Keywords
Antireflection coating; Multi-junction solar cell; Transfer matrix method; GaAs(1-x)Px/silicon tandem cell
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Funding
- Masdar Institute of Science and Technology [12RAMD2]
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In this paper, we systematically investigate the use of multilayer antireflection coatings (ARC) on GaAs0.69P0.31/Si dual-junction solar cells for achieving broadband reflection suppression. We incorporate dispersion, absorption, and both coherent and incoherent interference, by modeling the solar cell as a multilayer medium of thin films and a substrate, using the transfer matrix method. The analytical model is verified through reflectance measurements on a GaAs(1-x)Px/GaP stack. Our results show that optimized double-and triple-layer ARCs can minimize reflectance to below 5% within the spectral range of similar to 400-945 nm, with the latter maintaining this performance over a broader spectrum of 390-1000 nm, in comparison to 25-45% reflectance for the bare solar cell. (C) 2015 Elsevier Ltd. All rights reserved.
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