Fatigue-Like Behavior of Silver Metallization Gridlines and Proposed Damage Mechanics Model

Bosco, Nick; Chavez, Andre; Upadhyaya, Vijaykumar; Han, Sang

doi:10.1109/pvsc45281.2020.9300893

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Fatigue-Like Behavior of Silver Metallization Gridlines and Proposed Damage Mechanics Model

Bosco, Nick·Chavez, Andre·Upadhyaya, Vijaykumar·Han, Sang

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Abstract

In this work, we present a novel method to evaluate the fracture and fatigue-like behavior of crystalline silicon PV cell metallization. Initial results demonstrate that silver metal gridlines are capable of bridging a ~10–20 µm gap prior to becoming electrically open and do demonstrate fatigue-like behavior under cyclic straining conditions. This later phenomenon was well fit with a traditional power law equation for high cycle fatigue and enabled the development of a damage mechanics model for gridline failure.

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Bosco, Nick, Chavez, Andre, Upadhyaya, Vijaykumar, Han, Sang. 2021-01-05. Fatigue-Like Behavior of Silver Metallization Gridlines and Proposed Damage Mechanics Model. https://doi.org/10.1109/pvsc45281.2020.9300893

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