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    Embossed sheet glass lens arrays for hybrid PV modules

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    Author
    Angel, R.
    Eads, R.
    Hartweg, B.
    Holman, Z.
    Didato, N.
    Affiliation
    Steward Observatory Solar Lab, University of Arizona
    Issue Date
    2022
    
    Metadata
    Show full item record
    Publisher
    American Institute of Physics Inc.
    Citation
    Angel, R., Eads, R., Hartweg, B., Holman, Z., & Didato, N. (2022). Embossed sheet glass lens arrays for hybrid PV modules. AIP Conference Proceedings, 2550.
    Journal
    AIP Conference Proceedings
    Rights
    Copyright © 2022 Author(s). Published by AIP Publishing.
    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 hybrid PV-CPV modules the glass entrance window of a silicon module is replaced by an array of lenses that concentrate direct sunlight onto very small but twice-as-efficient multijunction PV cells while transmitting indirect daylight to the silicon. Hybrid modules have the potential for conversion efficiciency nearly double that of conventional silicon PV modules, and could become a major source of utility scale solar electricity generation. But for commercial success the added costs of the lens array, small CPV cells and dual rather than single axis tracking must be kept low. Here we describe a method for forming large lens arrays directly from glass as part of large-scale float glass manufacturing. A wide, continuous sheet of newly formed and still soft glass is embossed like shower glass, by passage between two rollers. These imprint cylindrical lenses on the upper and lower surfaces, arrayed at right angles to each other. The lenses act together to form point foci, where the multijunction cells are located on the silicon cells. The cost of lens arrays mass-produced in this way should be little more than that of the flat glass sheets of conventional modules, which in many cases are already roll-formed with textured surfaces to reduce reflection. We describe experiments made with commercially available embossed glass and cylindrical lenses. © 2022 Author(s).
    Note
    12 month embargo; published online: 02 September 2022
    ISSN
    0094-243X
    ISBN
    9780735443921
    DOI
    10.1063/5.0100087
    Version
    Final published version
    ae974a485f413a2113503eed53cd6c53
    10.1063/5.0100087
    Scopus Count
    Collections
    UA Faculty Publications

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