Mechanically stacked tandem cells consisting of GaAs thin-film upper cells and CuInSe/sub 2/ thin-film lower cells have been developed to meet the increasing power needs projected for future spacecraft. The authors report the fabrication of the first highly efficient lightweight GaAs/CuInSe/sub 2/ tandem cell on a 2-mil thick substrate, update recent performance improvements in thin-film GaAs/CuInSe/sub 2/ tandem cells, and discuss their application to space power systems. The efficiency of 4-cm/sup 2/ cells has improved to 21.6% AM0, the highest ever reported for a thin-film photovoltaic cell. Lightweight 4-cm/sup 2/ tandem cells have been successfully fabricated with efficiencies as high as 20.8%. These cells weighed about 180 mg without optimized substrate trimming. Radiation and operating temperature effects on GaAs/CuInSe/sub 2/ tandem cells are also discussed, and an interconnect scheme to form a voltage-matched string is described.<>


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    Titel :

    Lightweight (AlGaAs)GaAs/CuInSe/sub 2/ tandem junction solar cells for space applications


    Beteiligte:
    Kim, N.P. (Autor:in) / Stanbery, B.J. (Autor:in) / Burgess, R.M. (Autor:in) / Mickelsen, R.A. (Autor:in) / McClelland, R.W. (Autor:in) / King, B.D. (Autor:in) / Gale, R.P. (Autor:in)

    Erschienen in:

    Erscheinungsdatum :

    01.11.1989


    Format / Umfang :

    745427 byte




    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



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