Currently, the photovoltaic solar module industry is undergoing a transition period from PERC technology to N-type technology. N-type cells represented by TOPcon have begun to enter the mass production stage of explosive growth. This transformation has put forward higher requirements for the performance of the encapsulation film of photovoltaic modules. Photovoltaic film encapsulation materials are used between the solar glass/backsheet and solar cells. Their main function is to protect the solar cells, ensure that the photovoltaic modules are not affected by the external environment during operation, and extend the service life of the modules.

POE has good elasticity, strength, aging resistance, weather resistance, and water-proof properties. Its traditional application areas are mainly in automotive parts. Photovoltaic-grade POE is mainly used for photovoltaic components, especially in the packaging of TOPCon, HJT, and perovskite.

Photovoltaic PV film as a part of one of the materials for solar panels encapsulations, the main role is to adhesive solar cells, solar temper glass and solar backsheet together. According to the actual application requirements of solar PV modules, in the premise of ensuring the transmission performance of the module can isolate the external water vapor, extend the life of the solar module, protect the battery, and package it into a solar module that can output direct current. Photovoltaic PV film in general should have high transparency, high adhesion, good weather resistance and easy storage, good sound insulation effect, low melting point, easy flow and other excellent performance characteristics.

POE is usually a random copolymer elastomer of ethylene and high carbon α-olefins (1-butene, 1-hexene, 1-octene, etc.) It is precisely because of its special properties that POE is widely used in photovoltaics, automobiles, construction, cables and other fields.

The development of photovoltaics has brought great opportunities for the development of chemicals and new materials industries. However, N-type TOPCon and heterojunction cells are more sensitive to water vapor, and POE or EPE films with better water vapor barrier properties are popular, which has led to a substantial increase in the demand for POE. It is estimated that the global PV POE demand will reach 410,000 in 2023 Ton. China still needs to import a large amount of EVA and POE, and domestic chemical companies are actively deploying production capacity.