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ECN publicatie:
Titel:
Comparison of two step printing methods for front side metallisation
 
Auteur(s):
 
Gepubliceerd door: Publicatie datum:
ECN Zonne-energie 6-9-2010
 
ECN publicatienummer: Publicatie type:
ECN-M--10-017 Conferentiebijdrage
 
Aantal pagina's: Volledige tekst:
2 Download PDF  (190kB)

Gepresenteerd op: 25th European Photovoltaic Solar Energy Conference and Exhibition - 5th World Conference on Photovoltaic Energy Conversion, Valencia, Spain, 6-10 september 2010.

Samenvatting:
In this paper two different industrial two-step printing methods are described. The first method is stencil printing of the lines combined with screen-printing of the busbars. The second method is double screen-printing where a second print is placed on top of the first print. Both methods are ready for introduction or already in use in industry. Both methods result in an increase in cell efficiency of over 0.4% absolute as compared to single step screen printing. This increase is due to lower metal coverage, but also due to an improvement of the grid resistance and therefore higher fill factor. The amount of paste does not increase due to reduction in line width and because the busbars are not printed twice .


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