New research shows vulnerability of TOPCon solar cells to contact corrosion

Researchers at the University of New South Wales claim to have identified new TOPCon contact degradation mechanisms that are significantly influenced by the combination of ions and aluminum-silver paste compositions. The primary degradation mechanism was a significant increase in series resistance. Scientists from Australia's University of New South Wales (UNSW) and Chinese-Canadian PV module manufacturer Canadian Solar have investigated the degradation of industrial TOPCon solar cells subjected to accelerated testing conditions of 85 C and 85% relative humidity under the so-called dump heat ...

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