Arrhenius Analysis of the Degradation Modes in Emerging Photovoltaic Backsheets

Naila Al Hasan, Rachael Arnold, David Miller, Jimmy Newkirk, Emily Rago, Michael Thuis, Bruce King, Laura Schelhas, Archana Sinha, Kent Terwilliger, Sona Ulicna, Peter Pasmans, Christopher Thellen

Research output: Contribution to conferencePaperpeer-review


With increasingly large-scale deployments of photovoltaic (PV) modules to meet global energy demands, interest in better establishing modules' lifespans is growing. We report on the performance of co-extruded polyolefin-(PO)-based backsheets as environmentally friendly alternatives to fluoropolymer-reinforced polyethylene-terephthalate (PET)-based backsheets using three hygrometric accelerated test conditions. After completing cumulative 4000 hours of aging, we analyzed data from electrical performance (I-V), surface roughness (gloss), and appearance (L, a∗, b∗ color) characterizations to quantify degradation rates, quantify the corresponding activation energy, and cross-correlate between the characteristics examined, thereby providing insights into the relationship between physical characteristics and operating performance.

Original languageAmerican English
Number of pages3
StatePublished - 2022
Event49th IEEE Photovoltaics Specialists Conference, PVSC 2022 - Philadelphia, United States
Duration: 5 Jun 202210 Jun 2022


Conference49th IEEE Photovoltaics Specialists Conference, PVSC 2022
Country/TerritoryUnited States

Bibliographical note

See NREL/CP-5K00-82633 for preprint

NREL Publication Number

  • NREL/CP-5K00-85043


  • BackFLIP
  • backsheet
  • damp heat testing
  • durability
  • DuraMAT
  • IEC TS 62788-7-2
  • PET
  • photovoltaic (PV)
  • polyamide
  • polyolefin
  • UV weathering


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