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Proceedings Paper

Predicting the reliability of polyisobutylene seal for photovoltaic application
Author(s): Hua Liu; Jie Feng; Edoardo Nicoli; Leonardo López; Keith Kauffmann; Kwanho Yang; Narayan Ramesh
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Paper 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.

Paper Details

Date Published: 16 October 2012
PDF: 10 pages
Proc. SPIE 8472, Reliability of Photovoltaic Cells, Modules, Components, and Systems V, 84720Y (16 October 2012); doi: 10.1117/12.931240
Show Author Affiliations
Hua Liu, The Dow Chemical Co. (United States)
Jie Feng, The Dow Chemical Co. (United States)
Edoardo Nicoli, The Dow Chemical Co. (United States)
Leonardo López, The Dow Chemical Co. (United States)
Keith Kauffmann, The Dow Chemical Co. (United States)
Kwanho Yang, The Dow Chemical Co. (United States)
Narayan Ramesh, The Dow Chemical Co. (United States)


Published in SPIE Proceedings Vol. 8472:
Reliability of Photovoltaic Cells, Modules, Components, and Systems V
Neelkanth G. Dhere; John H. Wohlgemuth, Editor(s)

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