Predicting the reliability of polyisobutylene seal for photovoltaic application

Hua Liu; Jie Feng; Edoardo Nicoli; Leonardo López; Keith Kauffmann; Kwanho Yang; Narayan Ramesh

doi:10.1117/12.931240

16 October 2012 Predicting the reliability of polyisobutylene seal for photovoltaic application

Hua Liu, Jie Feng, Edoardo Nicoli, Leonardo López, Keith Kauffmann, Kwanho Yang, Narayan Ramesh

Proceedings Volume 8472, Reliability of Photovoltaic Cells, Modules, Components, and Systems V; 84720Y (2012) https://doi.org/10.1117/12.931240
Event: SPIE Solar Energy + Technology, 2012, San Diego, California, United States

Abstract

Polyisobutylene (PIB) or butyl rubber has been used widely in applications such as construction materials, adhesives and sealants, agricultural chemicals, medical devices, personal care products, and fuel additives. Due to the unique low gas permeability, flexibility, and excellent weathering resistance, PIB or PIB based materials are frequently employed in photovoltaic (PV) industry as sealant to protect the electrical assembly in the package as well as moisture sensitive PV cells from aggressive environments. Long term behavior of the PIB sealant within the operating temperature range of the PV devices thus becomes a critical factor to the reliability of the device. In this paper, an experimental study of the temperature dependent fatigue behavior of a PIB based joint is presented. A finite element model capturing the joint region geometry is developed and an approach to estimate lifetime is proposed.

Citation Download Citation

Hua Liu, Jie Feng, Edoardo Nicoli, Leonardo López, Keith Kauffmann, Kwanho Yang, and Narayan Ramesh "Predicting the reliability of polyisobutylene seal for photovoltaic application", Proc. SPIE 8472, Reliability of Photovoltaic Cells, Modules, Components, and Systems V, 84720Y (16 October 2012); https://doi.org/10.1117/12.931240

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