Abstract
We present the effect of broadband antireflective coverglasses (BARCs) with moth eye structures on the power generation capability of a sub-receiver module for concentrated photovoltaics. The period and height of the moth eye structures were designed by a rigorous coupled-wave analysis method in order to cover the full solar spectral ranges without transmission band shrinkage. The BARCs with moth eye structures were prepared by the dry etching of silver (Ag) nanomasks, and the fabricated moth eye structures on coverglass showed strongly enhanced transmittance compared to the bare glass with a flat surface, at wavelengths of 300 - 1800 nm. The BARCs were mounted on InGaP/GaAs/Ge triple-junction solar cells and the power conversion efficiency of this sub-receiver module reached 42.16% for 196 suns, which is a 7.41% boosted value compared to that of a module with bare coverglass, without any detrimental changes of the open circuit voltages (Voc) and fill factor (FF).
Highlights
Concentrated photovoltaic (CPV) systems with III-V based multi-junction solar cells have been considered a promising form of solar power generation due to their high power conversion efficiency per unit area [1,2,3]
We present the effect of broadband antireflective coverglasses (BARCs) with moth eye structures on the power generation capability of a sub-receiver module for concentrated photovoltaics
The period and height of the moth eye structures were designed by a rigorous coupled-wave analysis method in order to cover the full solar spectral ranges without transmission band shrinkage
Summary
Concentrated photovoltaic (CPV) systems with III-V based multi-junction solar cells have been considered a promising form of solar power generation due to their high power conversion efficiency per unit area [1,2,3]. Other attractive features, such as higher photon absorption by the direct bandgap energies, strong durability against high temperature, and a variety of material selection, make III-V solar cells very competitive for the space and terrestrial market [4]. The AR properties of BARCs were characterized by transmittance spectra measurement and confirmed by cell efficiency measurement of the CPV sub-receiver modules, with BARCs both at one sun and high concentration conditions
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
