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ECN publication
Title:
XIS: A low-current, high-voltage back-junction back-contact photovoltaic device
 
Author(s):
Mewe, A.A.; Stodolny, M.K.; Roosmalen, J.A.M. van; Bronsveld, P.C.P.; Janssen, G.J.M.; Keijzer, M.A. de; Weeber, A.W.
 
Published by: Publication date:
ECN Solar Energy 16-6-2013
 
ECN report number: Document type:
ECN-M--13-012 Conference Paper
 
Number of pages: Full text:
5 Download PDF  

Abstract:
In this paper we present a low-current, high-voltage back-junction back-contact integrated photovoltaic concept and experimental results of such a device, consisting of strip cells: narrow solar cells instead of conventional square cells. The concept is demonstrated by the successful transformation of a completely finished IBC cell into a XIS (Crystalline Silicon Interconnected Strips) device, leading to a Voc of 8.5 V for a series connection of 14 strip cells. For cell separation, different grooving methods were evaluated with respect to their effect on the quality of the groove surface. The effect of the surface passivation in the grooves, which is regarded as a critical parameter, on the XIS device was simulated to gain a better understanding of the processing requirements.


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