Moisture Transport, Adhesion, and Corrosion Protection of PV Module Packaging Materials

G. J. Jorgensen; K. M. Terwilliger; J. A. DelCueto; S. H. Glick; M. D. Kempe; J. W. Pankow; F. J. Pern; T. J. McMahon

doi:10.1016/j.solmat.2006.04.003

Moisture Transport, Adhesion, and Corrosion Protection of PV Module Packaging Materials

G. J. Jorgensen, K. M. Terwilliger, J. A. DelCueto, S. H. Glick, M. D. Kempe, J. W. Pankow, F. J. Pern, T. J. McMahon

Materials Science

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

171 Scopus Citations

Abstract

We compare the properties of a number of encapsulant and soft backsheet materials that are important for photovoltaic (PV) module packaging. These properties include moisture transport and interfacial adhesion as a function of accelerated exposure to damp heat. Various cleaning and priming methods were studied for improving adhesion to glass and polymer surfaces. Barrier coatings prepared by industry and at NREL have been found to promote adhesion and provide varying levels of moisture-ingress protection. Plasma pre-etch of polyethylene terephthalate (PET) before barrier deposition reduces adhesion strength and moisture barrier properties. Resistance to cracking during lamination and peeling during test are investigated. The relative effectiveness of various combined packaging strategies to protect PV devices has been studied using 80-nm-thick aluminum films deposited onto 10 cm×10 cm glass substrates. Glass/ethylene vinyl acetate (EVA)/aluminized-glass laminate constructions were found to trap harmful compounds that catalyzed moisture-driven corrosion of Al. Constructions with breathable backsheets allow higher rates of moisture ingress, but also allow egress of deleterious substances, thereby reducing corrosion.

Original language	American English
Pages (from-to)	2739-2775
Number of pages	37
Journal	Solar Energy Materials and Solar Cells
Volume	90
Issue number	16
DOIs	https://doi.org/10.1016/j.solmat.2006.04.003 https://doi.org/10.1016/j.solmat.2006.04.003
State	Published - 2006

NREL Publication Number

NREL/JA-520-39234

Keywords

Adhesion
Backsheets
Encapsulants
Moisture transport
Packaging materials

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Jorgensen, G. J., Terwilliger, K. M., DelCueto, J. A., Glick, S. H., Kempe, M. D., Pankow, J. W., Pern, F. J., & McMahon, T. J. (2006). Moisture Transport, Adhesion, and Corrosion Protection of PV Module Packaging Materials. Solar Energy Materials and Solar Cells, 90(16), 2739-2775. https://doi.org/10.1016/j.solmat.2006.04.003, https://doi.org/10.1016/j.solmat.2006.04.003

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abstract = "We compare the properties of a number of encapsulant and soft backsheet materials that are important for photovoltaic (PV) module packaging. These properties include moisture transport and interfacial adhesion as a function of accelerated exposure to damp heat. Various cleaning and priming methods were studied for improving adhesion to glass and polymer surfaces. Barrier coatings prepared by industry and at NREL have been found to promote adhesion and provide varying levels of moisture-ingress protection. Plasma pre-etch of polyethylene terephthalate (PET) before barrier deposition reduces adhesion strength and moisture barrier properties. Resistance to cracking during lamination and peeling during test are investigated. The relative effectiveness of various combined packaging strategies to protect PV devices has been studied using 80-nm-thick aluminum films deposited onto 10 cm×10 cm glass substrates. Glass/ethylene vinyl acetate (EVA)/aluminized-glass laminate constructions were found to trap harmful compounds that catalyzed moisture-driven corrosion of Al. Constructions with breathable backsheets allow higher rates of moisture ingress, but also allow egress of deleterious substances, thereby reducing corrosion.",

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author = "Jorgensen, {G. J.} and Terwilliger, {K. M.} and DelCueto, {J. A.} and Glick, {S. H.} and Kempe, {M. D.} and Pankow, {J. W.} and Pern, {F. J.} and McMahon, {T. J.}",

year = "2006",

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AU - DelCueto, J. A.

AU - Glick, S. H.

AU - Kempe, M. D.

AU - Pankow, J. W.

AU - Pern, F. J.

AU - McMahon, T. J.

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AB - We compare the properties of a number of encapsulant and soft backsheet materials that are important for photovoltaic (PV) module packaging. These properties include moisture transport and interfacial adhesion as a function of accelerated exposure to damp heat. Various cleaning and priming methods were studied for improving adhesion to glass and polymer surfaces. Barrier coatings prepared by industry and at NREL have been found to promote adhesion and provide varying levels of moisture-ingress protection. Plasma pre-etch of polyethylene terephthalate (PET) before barrier deposition reduces adhesion strength and moisture barrier properties. Resistance to cracking during lamination and peeling during test are investigated. The relative effectiveness of various combined packaging strategies to protect PV devices has been studied using 80-nm-thick aluminum films deposited onto 10 cm×10 cm glass substrates. Glass/ethylene vinyl acetate (EVA)/aluminized-glass laminate constructions were found to trap harmful compounds that catalyzed moisture-driven corrosion of Al. Constructions with breathable backsheets allow higher rates of moisture ingress, but also allow egress of deleterious substances, thereby reducing corrosion.

KW - Adhesion

KW - Backsheets

KW - Encapsulants

KW - Moisture transport

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ER -

Moisture Transport, Adhesion, and Corrosion Protection of PV Module Packaging Materials

Abstract

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Keywords

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