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  4. Zincate processes for silicon solar cell metallization
 
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2014
Journal Article
Title

Zincate processes for silicon solar cell metallization

Abstract
To allow plating on aluminum, zincate processes are introduced in metallization of silicon solar cells. Different zincate solutions are investigated regarding their adhesion on typical solar cell surface morphologies. Sufficient adhesion (>1.5 N/plus 45 degree rule}mm) on PVD aluminum layers is demonstrated by zincate processes with subsequent plating of nickel, copper and silver on both random pyramid and damage etched surfaces. Small-size (4 cm2) back-contact back-junction solar cells with an aluminum or aluminum-silicon seed layer are successfully processed in this way. On screen printed aluminum, adhesion has been found to be below 1 N/plus 45 degree rule}mm. Microstructural investigation of the failure mode reveals that the aluminum peels off the silicon surface in this case.
Author(s)
Kamp, Mathias
Bartsch, Jonas  
Cimiotti, Gisela  
Keding, Roman  
Zogaj, A.
Reichel, Christian  
Kalio, André
Glatthaar, Markus  
Glunz, Stefan W.  
Journal
Solar energy materials and solar cells  
DOI
10.1016/j.solmat.2013.05.035
Language
English
Fraunhofer-Institut für Solare Energiesysteme ISE  
Keyword(s)
  • Solarzellen - Entwicklung und Charakterisierung

  • Silicium-Photovoltaik

  • Kontaktierung und Strukturierung

  • Industrielle und neuartige Solarzellenstrukturen

  • Produktionsanlagen und Prozessentwicklung

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