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Title:
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0.35% Absolute Efficiency Gain of Bifacial N-type Si Solar cells by Industrial Metal Wrap Through Technology
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Author(s):
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Wenchao, Zhao; Jianming, Wang; Yanlong, Shen; Ziqian, Wang; Yingle, Chen; Hu, Zhiyan; Gaofei, Li ; Jianhui, Chen; Jingfeng, Xiong ; Guillevin, N.; Heurtault, B.; Geerligs, L.J.; Weeber, A.W.; Bultman, J.H.
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Published by:
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Publication date:
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ECN
Solar Energy
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3-6-2012
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ECN report number:
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Document type:
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ECN-M--12-021
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Conference Paper
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Number of pages:
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Full text:
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3
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Download PDF
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Abstract:
N-type Metal Wrap Through (n-MWT) is presented as an industrially promising back-contact technology to reach high performance of silicon solar cells and modules. It can combine benefits from both n-type base and MWT metallization. In this paper, the integration of the MWT
technique with a commercial industrial bifacial n-type Si Solar cell (239 cm2) process is described. After the integration, 0.35% absolute efficiency gain was achieved, and Voc gain and Isc gain up to 0.42% and 2.45%, respectively, were obtained, mainly attributed to reduced shadow loss and surface recombination. Based on calculations, the anticipation of further improvements
for n-MWT solar cells, by taking better advantage of this integration, is also presented.
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