BACKFLIP Project: Determination of BACKsheet Material Properties: A Comparison of Market-Benchmark Technologies to Novel Non-Fluoro-Based Co-Extruded Backsheet Materials and Their Correlation and Impact on PV Module Degradation Rates

David Miller, Frederic Dross, Robert Janssen, Peter Pasmans, Kurt Durme, Laura Schelhas, Archana Sinha, Bruce King, Ashley Maes, John Sherwin

Research output: NRELPoster

Abstract

Quantifying degradation rate of backsheets will help procuring materials for 30+ years. Today most backsheets on the market have a laminated PET core; polyolefin materials may provide better properties for backsheets (barrier to water, mechanical properties through UV and hydrolytic environments, etc.). End-of-life regulations may require fluorine-free backsheet products in future global markets. Parametrized equation predicting the service life of backsheets, and validated by both lab and outdoor extensive testing. Technical and commercial confidence to the entire value chain: from backsheet and module manufacturers to the downstream community (IPP, banks, developers) that materials of higher quality can help reduce finance costs, therefore driving down LCOE. A fast track PV module market adaptation for novel high-quality materials, such as co-extruded polyolefin-core backsheets, by obtaining unbiased durability data.
Original languageAmerican English
StatePublished - 2020

Publication series

NamePresented at the Photovoltaic Reliability Workshop, 25-27 February 2020, Lakewood, Colorado

NREL Publication Number

  • NREL/PO-5K00-76400

Keywords

  • backsheets
  • laminated PET core
  • polyolefin materials

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