Concentrator solar cells with efficiencies up to 46.1 % have been developed in a collaboration between Fraunhofer ISE, SOITEC and CEA-LETI using a fourjunction cell structure of GaInP/(Al)GaAs//GaInAsP/GaInAs joint by wafer bonding. The bottom tandem cell is based on the InP lattice constant, whereas the top tandem is realized on GaAs. In this paper we report on the potential of this cell architecture for space applications. Therefore, several solar cell wafers with adapted subcell bandgap energy and thickness were processed and characterized, measuring begin-of-life efficiencies up to 35.2 % under AM0 spectral conditions.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Four-Junction Wafer Bonded Solar Cells for Space Applications


    Contributors:


    Publication date :

    2019-09-30


    Size :

    396036 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English





    Germanium Wafer Improvements for Multi-Junction Space Solar Cells

    Datum, G. C. / American Institute of Aeronautics and Astronautics | British Library Conference Proceedings | 1999


    FOUR JUNCTION SOLAR CELL AND SOLAR CELL ASSEMBLIES FOR SPACE APPLICATIONS

    DERKACS DANIEL / BITTNER ZACHARY / WHIPPLE SAMANTHA et al. | European Patent Office | 2018

    Free access

    High-efficiency InP based four-junction solar cells

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