Creep in Photovoltaic Modules: Examining the Stability of Polymeric Materials and Components

Research output: Contribution to conferencePaper


Interest in renewable energy has motivated the implementation of new polymeric materials in photovoltaic modules. Some of these are non-cross-linked thermoplastics, in which there is a potential for new behaviors to occur, including phase transformation and visco-elastic flow. Differential scanning calorimetry and rheometry data were obtained and then combined with existing site-specifictime-temperature information in a theoretical analysis to estimate the displacement expected to occur during module service life. The analysis identified that, depending on the installation location, module configuration and/or mounting configuration, some of the thermoplastics are expected to undergo unacceptable physical displacement. While the examples here focus on encapsulation materials,the concerns apply equally to the frame, junction-box, and mounting-adhesive technologies.
Original languageAmerican English
Number of pages9
StatePublished - 2011
Event35th IEEE Photovoltaic Specialists Conference (PVSC '10) - Honolulu, Hawaii
Duration: 20 Jun 201025 Jun 2010


Conference35th IEEE Photovoltaic Specialists Conference (PVSC '10)
CityHonolulu, Hawaii

NREL Publication Number

  • NREL/CP-5200-47718


  • photovoltaic
  • PV


Dive into the research topics of 'Creep in Photovoltaic Modules: Examining the Stability of Polymeric Materials and Components'. Together they form a unique fingerprint.

Cite this