Electric orbit raising increases the radiation dose for space solar arrays significantly. This leads to the need for a more radiation resistant, highly efficient space solar cell. We propose a new wafer-bonded 4-junction structure which allows reaching begin-of-life efficiencies up to 34.7% (AMO) and efficiencies up to 30.8% (AMO) after 1*1015 cm−2 1-MeV electron irradiation. The high radiation hardness is a result of specific material properties of InP-rich compounds which benefit from significant defect annealing under typical operating conditions in space. A new four-j unction space solar cell, based on high InP fractions containing GaInAsP and Ge is currently under development in the EU project RadHard and first devices achieve an efficiency of 21.4% (AM0) before irradiation. After irradiation, as expected, a strong annealing effect after 3 days at AM0 & 60°C is found for this device. Already at this early development stage 78% of the end of life open circuit target voltage of 3.09 V under AM0 has been reached.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Radiation hard four-junction space solar cell based on GaInAsP alloys


    Beteiligte:
    Lackner, David (Autor:in) / Schwar, Joerg (Autor:in) / Dimroth, Frank (Autor:in) / Schon, Jonas (Autor:in) / Lang, Robin (Autor:in) / Godejohann, Birte-Julia (Autor:in) / Predan, Felix (Autor:in) / Schachtner, Michael (Autor:in) / Boizot, Bruno (Autor:in) / Lefevre, Jereemie (Autor:in)


    Erscheinungsdatum :

    2019-09-01


    Format / Umfang :

    335061 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch




    FOUR JUNCTION SOLAR CELL AND SOLAR CELL ASSEMBLIES FOR SPACE APPLICATIONS

    DERKACS DANIEL / BITTNER ZACHARY / WHIPPLE SAMANTHA et al. | Europäisches Patentamt | 2018

    Freier Zugriff

    A monolithic three-terminal GaInAsP/GaInAs tandem solar cell

    SCHULTZ, P.WESLEY | Online Contents | 2009


    Four-Junction Wafer Bonded Solar Cells for Space Applications

    Siefer, Gerald / Beutel, Paul / Lackner, David et al. | IEEE | 2019


    High-efficiency InP based four-junction solar cells

    Gu, Y. / Yan, J. / Raj, M. et al. | IEEE | 2003