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Laser isolation of shunted regions in industrial solar cells
Author(s) -
Abbott M. D.,
Trupke T.,
Hartmann H. P.,
Gupta R.,
Breitenstein O.
Publication year - 2007
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.766
Subject(s) - laser , solar cell , isolation (microbiology) , shunt (medical) , silicon solar cell , photoluminescence , silicon , materials science , optoelectronics , irradiance , optics , biology , physics , bioinformatics , medicine , cardiology
This paper provides proof of concept for a technique that uses laser‐ablated grooves to locally isolate shunted regions in industrial silicon solar cells. The shunted regions are located using photoluminescence imaging and then isolated from the active cell area with a Nd:YAG laser. By applying this shunt isolation technique, we demonstrate that a strongly shunted 9·6% efficient industrial screen‐printed solar cell could be recovered to 13·3%. With further development this technique could be applied in an industrial environment to mitigate yield losses and improve average cell efficiencies. Copyright © 2007 John Wiley & Sons, Ltd.