[
    {
        "id": "authors:h1xn7-nh162",
        "collection": "authors",
        "collection_id": "h1xn7-nh162",
        "cite_using_url": "https://authors.library.caltech.edu/records/h1xn7-nh162",
        "type": "conference_item",
        "title": "Epitaxy-Free, Thin-Film GaAs Solar Cells Fabricated with Diffusion Doping and Mechanical Spalling",
        "book_title": "2023 IEEE 50th Photovoltaic Specialists Conference (PVSC) : 11-16 June 2023",
        "author": [
            {
                "family_name": "Jahelka",
                "given_name": "Phillip R.",
                "orcid": "0000-0002-1460-7933",
                "clpid": "Jahelka-Phillip-R"
            },
            {
                "family_name": "Nyholm",
                "given_name": "Andrew w.",
                "orcid": "0009-0009-6856-6522",
                "clpid": "Nyholm-Andrew-W"
            },
            {
                "family_name": "Atwater",
                "given_name": "Harry A.",
                "orcid": "0000-0001-9435-0201",
                "clpid": "Atwater-H-A"
            }
        ],
        "abstract": "We report a process for the fabrication of ultralight thin-film GaAs solar cells without epitaxial growth. To fabricate the cell, we first create a pn junction by zinc diffusion to realize p-type doping in bulk n-type crystals. We then spall a thin film of GaAs that includes the pn junction on an electroplated nickel backing layer directly deposited onto the diffusion doped p-GaAs. The electroplated nickel serves as a mechanical handle layer and rear electrical contact. A Pd/Ge/ Au top contact becomes ohmic after a 180 C anneal, a process which is compatible with the nickel and tape handling layers. Under AM 1.5G illumination the cell achieves a V oc of 856 m V, and including the metal and GaAs, we reach a specific power of 500 W /kg at an areal mass density of 32 g/m2.",
        "doi": "10.1109/pvsc48320.2023.10359578",
        "isbn": "9781665460606",
        "publisher": "IEEE",
        "place_of_publication": "1Piscataway, NJ",
        "publication_date": "2023-06-11",
        "pages": "1-1"
    },
    {
        "id": "authors:zyebp-m9c32",
        "collection": "authors",
        "collection_id": "zyebp-m9c32",
        "cite_using_url": "https://authors.library.caltech.edu/records/zyebp-m9c32",
        "type": "conference_item",
        "title": "Alba: Testing Emerging Photovoltaic Technologies in Low-Earth Orbit",
        "book_title": "02023 IEEE 50th Photovoltaic Specialists Conference (PVSC) : 11-16 June 2023",
        "author": [
            {
                "family_name": "Kelzenberg",
                "given_name": "Michael D.",
                "orcid": "0000-0002-6249-2827",
                "clpid": "Kelzenberg-Michael-David"
            },
            {
                "family_name": "Jahelka",
                "given_name": "Phillip",
                "orcid": "0000-0002-1460-7933",
                "clpid": "Jahelka-Phillip-R"
            },
            {
                "family_name": "Madonna",
                "given_name": "Richard G.",
                "orcid": "0000-0002-8191-4896",
                "clpid": "Madonna-Richard"
            },
            {
                "family_name": "Atwater",
                "given_name": "Harry A.",
                "orcid": "0000-0001-9435-0201",
                "clpid": "Atwater-H-A"
            }
        ],
        "abstract": "Caltech' SSPD-1 mission seeks to investigate three key technologies relevant for the development of space-based solar power: ultralight radiation-tolerant photovoltaics, wireless power transfer, and compact lightweight deployable structures. The mission comprises three experimental modules with shared central avionics, integrated as a hosted payload on the Momentus Vigoride 5 vehicle. The photovoltaics module is Alba. It features (32) small-area research cells with accompanying instrumentation capable of recording I-V sweep data as well as temperature and sun angle. The mission launched successfully to low-earth orbit aboard a SpaceX Falcon 9 Transporter flight on January 3, 2023, and is currently undergoing initialization activities, which will be followed by approximately six months of data collection prior to deorbit. We plan to present data collected to-date from the flight.",
        "doi": "10.1109/pvsc48320.2023.10359566",
        "isbn": "9781665460606",
        "publisher": "IEEE",
        "place_of_publication": "Piscataway, NJ",
        "publication_date": "2023-06-11",
        "pages": "1-1"
    }
]