Determination of Metal-Induced Recombination of n-Type Bifacial Si Solar Cells Using Special Print Patterns

Divya Ananthanarayanan,Armin G Aberle,Er-Chien Wang,Jian Wei Ho,Johnson Wong,Ning Chen

doi:10.1109/jphotov.2019.2903177

Determination of Metal-Induced Recombination of n-Type Bifacial Si Solar Cells Using Special Print Patterns

Divya Ananthanarayanan, Armin G Aberle + Show 4 more

https://doi.org/10.1109/jphotov.2019.2903177

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Journal: IEEE Journal of Photovoltaics	Publication Date: May 1, 2019
Citations: 22

Affiliation: National University of Singapore, Helmholtz-Zentrum Berlin für Materialien und Energie, Morgan Solar (Canada)

#Back Surface Fields #Bifacial Solar Cells + Show 8 more

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Abstract

A systematic routine to determine the front and rear metal induced recombination losses of bifacial silicon solar cells using an automated Griddler finite-element method fit procedure is presented in this paper. The method prescribes the preparation of easy-to-fabricate test patterns printed on the front and rear side of separate cells, nonmetallized cells, and simple photoluminescence imaging. Eight different samples with similar front boron emitter and different phosphorus back surface fields (BSFs) are analyzed. Choosing an optimized BSF is shown to lead to a cell efficiency gain of ∼0.4% absolute.

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