Abstract
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 ~400-945nm, with the latter maintaining this performance over a broader spectrum of 390-1000nm, in comparison to 25-45% reflectance for the bare solar cell.
Original language | British English |
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Pages (from-to) | 76-86 |
Number of pages | 11 |
Journal | Solar Energy |
Volume | 122 |
DOIs | |
State | Published - 1 Dec 2015 |
Keywords
- Antireflection coating
- GaAsP/silicon tandem cell
- Multi-junction solar cell
- Transfer matrix method