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Author: Träger, A. ×

Publications Search Results

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  • Publication
    HIP-MWT: Our approach for high performance ribbon based back contact MWT modules with Low CTM losses
    ( 2013)
    Spribille, Alma
    ;
    Hendrichs, M.-S.
    ;
    Thaidigsmann, Benjamin
    ;
    Clement, Florian
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    Hädrich, Ingrid
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    Wiese, Martin
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    Kaufmann, S.
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    Morf, P.
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    Gretler, A.
    ;
    Rueedy, A.
    ;
    Nussbaumer, H.
    ;
    Träger, A.
    The development of high performance solar cells suitable for cost effective and low CTM (cell-to-module)-loss module fabrication is a major goal of current R&D activities. Our approach to achieve this goal combines the HIP-MWT (high performance metal wrap through) cell concept and the cost efficient ribbon based interconnection process. In comparison to other back-contact module approaches (e.g. conductive back sheet foil) the conventional module fabrication process needs only little adaptions of the stringing process, which leads to exceptionally low investment costs. This allows a fast and simple conversion of current production lines towards higher module efficiencies.
  • Publication
    Industrial LCP selective emitter solar cells with plated contacts
    ( 2010)
    Kray, Daniel
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    Bay, Norbert
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    Cimiotti, Gisela
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    Kleinschmidt, S.
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    Kösterke, N.
    ;
    Lösel, Andreas
    ;
    Sailer, M.
    ;
    Träger, A.
    ;
    Kühnlein, H.
    ;
    Nussbaumer, H.
    ;
    Fleischmann, Christoph
    ;
    Granek, Filip
    The investigation of different selective emitter (SE) approaches [1-3] is a current trend in solar cell manufacturing. The incorporation of a local high phosphorous doping underneath the front contact grid allows for the use of high-sheet resistance illuminated emitters that combine low recombination and improved blue response. Further efficiency increase compared to the standard screen-printed solar cell is achieved via plated contacts [4-5] that feature better aspect ratio and optical properties [6], higher line conductivity and smaller width [5] compared to screen-printed contacts. In this paper we present detailed technological requirements for next-generation front side metallization as well as experimental results of the RENA high-efficiency metallization cluster consisting of Laser Chemical Processing (LCP) and Ni-Ag light-induced plating (LIP). It becomes clear that efficiency on cell level is not the only figure of merit for a successful product and that the co mbination of SE with plating has a much higher potential for increasing cell efficiency than the metallization of SE via screen-printing.