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Shunt removal and patching for crystalline silicon solar cells using infrared imaging and laser cutting
Author(s) -
Zhang Lucheng,
Shen Hui,
Yang Zhuojian,
Jin Jingsheng
Publication year - 2010
Publication title -
progress in photovoltaics: research and applications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.286
H-Index - 131
eISSN - 1099-159X
pISSN - 1062-7995
DOI - 10.1002/pip.934
Subject(s) - shunt (medical) , infrared , materials science , laser , silicon , optics , optoelectronics , biomedical engineering , laser cutting , medicine , nanotechnology , surgery , physics
Shunts in crystalline silicon solar cells can be physically removed and replaced with good cells to eliminate their influences, which is proved by the experiments in this paper. By infrared imaging and laser cutting, the shunted regions near the edges of cell A and in the middle of cell B were identified and removed with their efficiencies increased by 6·8% and 3·0%, respectively. After shunt removal, cell B was patched up with good cells and its final work current further increased from 3·71 to 4·11 A. The result implies that this work could improve the output power and current matching in a module for the repaired cell. Copyright © 2009 John Wiley & Sons, Ltd.