In the field of solar panel packaging, are there other materials that can replace ETFE film materials?

PET (Polyethylene Terephthalate):

Advantages:

• PET is another commonly used encapsulation material, particularly for flexible solar panels.
• It offers good light transmittance and weather resistance, with a potentially more cost-effective price compared to ETFE.
  Disadvantages:
• PET has slightly lower light transmittance than ETFE and lacks self-cleaning properties.

EVA (Ethylene Vinyl Acetate Copolymer):

Application:

• Primarily used as an encapsulating adhesive film (not as an outer layer) to bond solar cells, front covers, and backsheets.
  Features:
• High light transmittance, resistance to UV-induced yellowing, and strong adhesion.
• Drawbacks include higher water vapor transmission rates and susceptibility to Potential Induced Degradation (PID).

POE (Polyolefin Elastomer) Encapsulation Film:

Advantages:

• Higher water vapor barrier efficiency, superior weather resistance, and stronger anti-PID performance (water vapor transmission rate is 1/8 that of EVA films).
  Disadvantages:
• Higher cost, prone to bubble formation during lamination, lower yield rates for photovoltaic modules, and heavy reliance on imported materials.

EPE (EVA-POE-EVA) Encapsulation Film:

Features:

• A three-layer composite structure combining POE's high water resistance and anti-PID performance with EVA's high lamination yield for double-glass modules.
  Application:
• Suitable for PERC bifacial double-glass modules, N-type bifacial double-glass modules, and other high-weather-resistance photovoltaic components.

Tedlar Composite Film (Polyvinyl Fluoride Composite):

Application:

• Often used as a backsheet material for solar panels.
  Features:
• Provides excellent moisture resistance and acid resistance, enhancing the overall durability of solar modules.