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Photovoltaics

Material of choice for encapsulants

The global photovoltaic (PV) market continues to grow. And the market wants modules with longer service life and better reliability.

Material selection for PV encapsulants can be a critical factor in the ongoing success of PV module manufacturers. ENGAGE™ PV Polyolefin Elastomers (POE) help make the choice for PV encapsulant films easier with opportunities for exceptional long-term performance, reliability and lower overall costs.  

ENGAGE™ PV POEs offer improved performance compared to most competing materials

Top and bottom PV encapsulant films made with ENGAGE™ PV POEs offer opportunities to significantly:  

  • Increase power generation, reliability and service life 
  • Improve resistance to potential induced degradation (PID), especially for high-efficiency bifacial solar cells
  • Reduce the levelized cost of electricity (LCOE) as well as total system costs 
Enhanced Power Retention Weathering Encapsulant Film Degradation Under UV

Better "anti-PID" performance is enabled by films made with ENGAGE™ PV POE, especially for high-efficiency bifacial solar cells.

Third-party testing by Fraunhofer showed ENGAGE™ PV exhibited virtually no PID during service life, with a power loss of 0.3% versus 35% with EVA-based film.¹

After alternating cycles of damp heat and QUV exposure over extended periods of time, a module with ENGAGE™ PV films showed more consistent power compared to a module using ethylene vinyl acetate (EVA) film. Even after 10,000 hours of Xenon Arc weathering testing, encapsulant films made with ENGAGE™ PV did not show increased yellowness index, while EVA film turned an evident yellow color.²

1Based on tests conducted by the Fraunhofer Center for Silicon Photovoltaics CSP. Photographs and chart provided by Fraunhofer. Additional information available upon request.

2Based on Dow testing that compared a module film made with ENGAGE™ PV POE to a module made with an EVA-based film. Additional information available upon request.