What is the coating on the back of a photovoltaic panel called

Why do you need a backsheet for a photovoltaic panel?

Photovoltaic (PV) modules need to be a reliable source of power for 25 years or more, so their components all need to work in concert to ensure the panel continues to perform. Backsheets help do that – they insulate the electrical components of the module, protecting them over their lifetime. Backsheet performance can be analyzed by:

What is a solar cell backsheet?

One of the critical solar panel materials used in the construction of a PV module is the solar cell back sheet. The PV backsheet is on the outermost layer of the PV module.

What is the difference between Eva and photovoltaic backsheet?

Photovoltaic backsheets play an important role in protecting solar modules over their lifetime. On the other hand, EVA is an encapsulant for solar Cells/ Modules. It is a copolymer film which acts as an essential sealant of photovoltaic solar modules for ensuring the reliability and performance.

How are solar panels encapsulated?

Cells are encapsulated before being laminated with glass and the backsheet. So, in a typical solar module, you have the glass on top, an EVA sheet after that, followed by the cells, one more layer of EVA sheet below the cell, and finally the backsheet. Solar panels have typically two layers of EVA-based encapsulants in a solar module.

Are all photovoltaic backsheets the same?

The mechanical, electrical, optical and chemical properties and durability of backsheets are critical to the long term reliability, durability and safety of the photovoltaic modules. However, not all backsheets are created equal.

What insulator is used in a photovoltaic module?

DUN-SOLAR™ EPE insulation has been developed to be used as an electrical insulator and physical spacer in critical areas inside of photovoltaic modules. PV Back Sheet - The PV back sheet is a photovoltaic laminate that protects the PV module from UV, moisture and weather while acting as an electrical insulator.