Ethylene-Vinyl Acetate Potential Problems for Photovoltaic Packaging: Preprint Metadata

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  • Main Title Ethylene-Vinyl Acetate Potential Problems for Photovoltaic Packaging: Preprint


  • Author: Kempe, M. D.
    Creator Type: Personal
  • Author: Jorgensen, G. J.
    Creator Type: Personal
  • Author: Terwilliger, K. M.
    Creator Type: Personal
  • Author: McMahon, T. J.
    Creator Type: Personal
  • Author: Kennedy, C. E.
    Creator Type: Personal
  • Author: Borek, T. T.
    Creator Type: Personal


  • Sponsor: United States. Department of Energy.
    Contributor Type: Organization


  • Name: National Renewable Energy Laboratory (U.S.)
    Place of Publication: Golden, Colorado
    Additional Info: National Renewable Energy Laboratory (NREL), Golden, CO.


  • Creation: 2006-05-01


  • English


  • Content Description: Photovoltaic (PV) devices are typically encapsulated using ethylene-vinyl acetate (EVA) to provide mechanical support, optical coupling, electrical isolation, and protection against environmental exposure. Under exposure to atmospheric water and/or ultraviolet radiation, EVA will decompose to produce acetic acid, lowering the pH and increasing the surface corrosion rates of embedded devices. Even though acetic acid is produced at a very slow rate, it may not take much to catalyze reactions that lead to rapid module deterioration. Another consideration is that the glass transition of EVA, as measured using dynamic mechanical analysis, begins at temperatures of about ?15 C. Temperatures lower than this can be reached for extended periods of time in some climates. Because of increased moduli below the glass transition temperature, a module may be more vulnerable to damage if a mechanical load is applied by snow or wind at low temperatures. Modules using EVA should not be rated for use at such low temperatures without additional low-temperature mechanical testing beyond the scope of UL 1703.
  • Physical Description: 6 p.


  • Keyword: Pv
  • Keyword: Snow
  • STI Subject Categories: 36 Materials Science
  • Keyword: Glass
  • Keyword: Transition Temperature
  • Keyword: Water Pv
  • Keyword: Environmental Exposure
  • Keyword: Corrosion
  • Keyword: Devices
  • Keyword: Silicon Wafer
  • Keyword: Energy Conversion
  • Keyword: Electrical Isolation
  • Keyword: Optical Coupling
  • STI Subject Categories: 14 Solar Energy
  • Keyword: Testing
  • Keyword: Packaging
  • Keyword: Climates
  • Keyword: Ethylene-Vinyl Acetate (Eva)
  • Keyword: Ultraviolet Radiation
  • Keyword: Acetates
  • Keyword: Glass Transition Temperature
  • Keyword: Solar Energy - Photovoltaics
  • Keyword: Acetic Acid


  • Conference: Presented at the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion (WCPEC-4), 7-12 May 2006, Waikoloa, Hawaii


  • Name: Office of Scientific & Technical Information Technical Reports
    Code: OSTI


  • Name: UNT Libraries Government Documents Department
    Code: UNTGD

Resource Type

  • Article


  • Text


  • Report No.: NREL/CP-520-39915
  • Grant Number: AC36-99-GO10337
  • Office of Scientific & Technical Information Report Number: 891546
  • Archival Resource Key: ark:/67531/metadc873283