@inproceedings{63fe9c83eec64b3699375896d5253b52,
title = "Spectrum-splitting photovoltaic system using bifacial cells for high energy yield",
abstract = "In this paper a spectrum-splitting photovoltaic system is proposed that uses bifacial silicon solar cells to maximize total energy yield. The system is unique in its ability to convert direct sunlight with high-efficiency (<30%) while simultaneously converting diffuse and rear-side irradiance. A volume holographic lens array is used to divide the solar spectrum into spectral bands optimized for conversion by wide-bandgap and bifacial silicon solar cells. An approach for simulating the energy yield, optimizing the holographic lens array, and analyzing the effect of concentration ratio, aspect ratio, and illumination characteristics is described. Design examples for two different solar cell combinations are provided. A GaAs and bifacial silicon combination achieves an energy conversion efficiency of 32.0% and a MgCdTe and bifacial silicon combination achieves a 31.0% energy conversion efficiency. Additional solutions are provided when constraints on concentration ratio and aspect ratio are applied, allowing the designer to balance energy yield with cost and size considerations. The performance of the proposed system is compared to conventional monofacial silicon, bifacial silicon, and monofacial spectrum-splitting modules, and show that improvements in energy yield of over 45%, 25%, and 10% can be achieved, respectively.",
keywords = "Bifacial Cells, Diffraction, Energy Conversion, Holography, Photovoltaics, Spectrum-Splitting",
author = "Chrysler, {Benjamin D.} and Xuessen Tan and Jianbo Zhao and Kostuk, {Raymond K.}",
note = "Funding Information: We would like to acknowledge support from our sponsors: NSF/DOE ERC cooperative agreement No. EEC-1041895 and NSF grant ECCS-1405619. Ben Chrysler would like to acknowledge support from the National Science Foundation Graduate Research Fellowship Program Grant (DGE-1143953). Any opinions, findings, and conclusions or recommendations expressed in this material are those of the authors and do not necessarily reflect the views of the National Science Foundation. Publisher Copyright: {\textcopyright} 2019 SPIE.; New Concepts in Solar and Thermal Radiation Conversion II 2019 ; Conference date: 11-08-2019",
year = "2019",
doi = "10.1117/12.2528049",
language = "English (US)",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
publisher = "SPIE",
editor = "Munday, {Jeremy N.} and Peter Bermel",
booktitle = "New Concepts in Solar and Thermal Radiation Conversion II",
}