0.35% absolute efficiency gain of bifacial N-type Si solar cells by industrial Metal Wrap Through Technology

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...

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Bibliographic Details
Main Authors: Wenchao Zhao, Jianming Wang, Yanlong Shen, Ziqian Wang, Yingle Chen, Zhiyan Hu, Gaofei Li, Jianhui Chen, Jingfeng Xiong, Guillevin, N., Heurtault, B. J. B., Geerligs, L. J., Weeber, A. W., Bultman, J. H.
Format: Conference Proceeding
Language:English
Subjects:
Abstracts
bifacial
Gain measurement
metal wrap through
n-type
silicon
solar cells
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Summary: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 cm 2 ) 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.
ISSN:0160-8371
DOI:10.1109/PVSC.2012.6318055