DuPont Teijin Films, the world's leading manufacturer of PET polyester films, offers a range of films tailored to the photovoltaic market.

First generation backsheets are based on polyester film laminated between two layers of Fluoropolymer film. Mylar® A polyester film is an ideal candidate for such laminates and can be engineered to offer improved hydrolysis performance and properties:

Benefits, durability and strengths... 

  • Excellent electrical properties
  • Meets water vapour barrier requirements
  • Tailored dimensional stability
  • Easy to handle
  • Robust "cut-through" and tear resistance
  • Can be engineered to exceed 3000hrs damp heat

Mylar® PET polyester films for this application area are available in a range of thicknesses from 50 microns (2 mil) up to 250 microns (10 mil), with other thicknesses possible by discussion.

In the future heat stabilised Melinex® PET polyester films will have an important role in tomorrow's flexible solar cells as their increased dimensional stability provides an ability to be processed at higher temperatures.

For more information on our areas of expertise in PV see individual pages by clicking on the links below