Testing of Packaging Materials for Improved PV Module Reliability

Research output: Contribution to conferencePaper


A number of candidate alternative encapsulant and soft backsheet materials have been evaluated in terms of their suitability for photovoltaic (PV) module packaging applications. Relevant properties, including interfacial adhesion and moisture transport, have been measured as a function of damp-heat (85?C / 85% relative humidity) exposure. Based on these tests, promising new encapsulants withimproved properties have been identified. Backsheets prepared by industry and at NREL have been found to provide varying levels of moisture ingress protection. To achieve significantly improved products, further development of these candidates is ongoing. The relative effectiveness of various packaging strategies to protect PV devices has also been investigated.
Original languageAmerican English
Number of pages7
StatePublished - 2005
Event31st IEEE Photovoltaics Specialists Conference and Exhibition - Lake Buena Vista, Florida
Duration: 3 Jan 20057 Jan 2005


Conference31st IEEE Photovoltaics Specialists Conference and Exhibition
CityLake Buena Vista, Florida

NREL Publication Number

  • NREL/CP-520-37366


  • encapsulant
  • module reliability
  • moisture ingress protection
  • packaging applications
  • PV
  • soft backsheet materials


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