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    Volume holographic lens spectrum-splitting photovoltaic system for high energy yield with direct and diffuse solar illumination

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    Author
    Chrysler, Benjamin D.
    Wu, Yuechen
    Kostuk, Raymond K.
    Yu, Zhengshan
    Affiliation
    Univ Arizona, Elect & Comp Engn Dept
    Univ Arizona, Coll Opt Sci
    Issue Date
    2017-08-25
    Keywords
    spectrum splitting
    holographic optical elements
    photovoltaics
    Covestro Bayfol HX
    diffuse sunlight
    high efficiency
    
    Metadata
    Show full item record
    Publisher
    SPIE-INT SOC OPTICAL ENGINEERING
    Citation
    Benjamin D. Chrysler, Yuechen Wu, Zhengshan Yu, Raymond K. Kostuk, "Volume holographic lens spectrum-splitting photovoltaic system for high energy yield with direct and diffuse solar illumination", Proc. SPIE 10368, Next Generation Technologies for Solar Energy Conversion VIII, 103680G (25 August 2017); doi: 10.1117/12.2273204; https://doi.org/10.1117/12.2273204
    Journal
    NEXT GENERATION TECHNOLOGIES FOR SOLAR ENERGY CONVERSION VIII
    Rights
    © (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE).
    Collection Information
    This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.
    Abstract
    In this paper a prototype spectrum-splitting photovoltaic system based on volume holographic lenses (VHL) is designed, fabricated and tested. In spectrum-splitting systems, incident sunlight is divided in spectral bands for optimal conversion by a set of single-junction PV cells that are laterally separated. The VHL spectrum-splitting system in this paper has a form factor similar to conventional silicon PV modules but with higher efficiencies (>30%). Unlike many other spectrum-splitting systems that have been proposed in the past, the system in this work converts both direct and diffuse sunlight while using inexpensive 1-axis tracking systems. The VHL system uses holographic lenses that focus light at a transition wavelength to the boundary between two PV cells. Longer wavelength light is dispersed to the narrow bandgap cell and shorter wavelength light to the wide bandgap cell. A prototype system is designed with silicon and GaAs PV cells. The holographic lenses are fabricated in Covestro Bayfol HX photopolymer by 'stitching' together lens segments through sequential masked exposures. The PV cells and holographic lenses were characterized and the data was used in a raytrace simulation and predicts an improvement in total power output of 15.2% compared to a non-spectrum-splitting reference. A laboratory measurement yielded an improvement in power output of 8.5%.
    ISSN
    0277-786X
    1996-756X
    DOI
    10.1117/12.2273204
    Version
    Final published version
    Sponsors
    NSF/DOE ERC [EEC-1041895]; NSF [ECCS-1405619]; State of Arizona TRIF/WEES [5835204]; National Science Foundation Graduate Research Fellowship Program [DGE-1143953]
    Additional Links
    https://www.spiedigitallibrary.org/conference-proceedings-of-spie/10368/2273204/Volume-holographic-lens-spectrum-splitting-photovoltaic-system-for-high-energy/10.1117/12.2273204.full
    ae974a485f413a2113503eed53cd6c53
    10.1117/12.2273204
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