Well Intended Contact Failures on Interdigitated Back Contact Solar Cells

Yeray Mateos; Nekane Azkona; Aloña Otaegi; Eneko Cereceda; Vanesa Fano; Eneko Ortega; Juan Carlos Jimeno

doi:10.52825/siliconpv.v3i.2679

Authors

Yeray Mateos University of the Basque Country
Dr. Nekane Azkona University of the Basque Country https://orcid.org/0000-0001-9199-4239
Dr. Aloña Otaegi University of the Basque Country
Dr. Eneko Cereceda University of the Basque Country
Vanesa Fano University of the Basque Country
Eneko Ortega University of the Basque Country
Prof. Dr. Juan Carlos Jimeno University of the Basque Country

DOI:

https://doi.org/10.52825/siliconpv.v3i.2679

Keywords:

IBC, Interconnection Failures, Electroluminescence

Abstract

The interconnection of the cells that make up a solar panel is a simple step, but it is not unimportant. The panels are made up of cells in series, so that a poorly connected cell can spoil the good performance of the entire panel. Back-contact solar cells have polarity connections on the back, making interconnection critical. In this work contact failures are intendedly induced, solar cells are biased at several conditions and electroluminescence measurements are carried out to detect problems. The results show that even at low amperage, connection faults can be identified by simple image processing. As a conclusion, this detection method could be implemented before encapsulating the panels, avoiding efficiency losses.

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Well Intended Contact Failures on Interdigitated Back Contact Solar Cells

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