What is the white film on the back of the photovoltaic panel

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.

What is solar Eva film?

It is utilised in the photovoltaic (PV) sector as a crystalline silicon solar cell encapsulation material in the production of PV modules. Solar EVA Film provides long-lasting protection for solar panels with minimal performance degradation. A rubbery material with a milky white color makes up a Solar EVA sheet.

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 a solar Eva sheet?

A rubbery material with a milky white color makes up a Solar EVA sheet. It transforms into a clear protective layer when heated, sealing and insulating the solar cell. The cells are laminated between films of EVA with the aid of a lamination machine in a vacuum that is compressed at temperatures of up to 150 C.

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:

Why do solar cells need an EVA sheet?

Afterward, a tough and long-lasting EVA sheet is used to cover the cells’ lower side once more. The back sheet completely encloses it. Moisture, oxygen and the environment can all damage solar cells. A solar module’s EVA stops air and moisture from getting to the solar cells and deteriorating them.