New barrier coating materials for PV module backsheets

Author

Barber, Greg D. ; Jorgensen, Gary J. ; Terwilliger, K. ; Glick, S.H. ; Pern, J. ; McMahon, T.J.

Author_Institution

Nat. Center for Photovoltaics, Nat. Renewable Energy Lab., Golden, CO, USA

fYear

2002

fDate

19-24 May 2002

Firstpage

1541

Lastpage

1544

Abstract

High moisture barrier high resistivity coatings on polyethylene terepthalate (PET) have been fabricated and characterized for use in PV module back sheet applications. These thin film barriers exhibit water vapor transmission rates (WVTR) as low as 0.1 g/m²-day at 37.8°C and have shown excellent adhesion (> 10 N/mm) to both ethylene vinyl acetate (EVA) and PET even after filtered xenon arc lamp UV exposure. The WVTR and adhesion values for this construction are compared to and shown to be superior to candidate polymeric backsheet materials.

Keywords

adhesion; electrical resistivity; insulating thin films; life testing; polymers; protective coatings; solar cell arrays; PV module backsheets; accelerated testing; adhesion; barrier coating materials; ethylene vinyl acetate; filtered xenon arc lamp UV exposure; high moisture barrier coatings; high resistivity coatings; polyethylene terepthalate; thin film barriers; water vapor transmission rates; Adhesives; Coatings; Conductivity; Moisture; Polyethylene; Polymers; Positron emission tomography; Sheet materials; Transistors; Xenon;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference, 2002. Conference Record of the Twenty-Ninth IEEE

ISSN

1060-8371

Print_ISBN

0-7803-7471-1

Type

conf

DOI

10.1109/PVSC.2002.1190906

Filename

1190906