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) adhesives utilize moisture in the air to cure at room temperature to provide excellent bonding and sealing properties for solar PV module outer frame and junction box applications. When manufacturing and assembling PV modules, it is necessary to select adhesives with excellent properties such as high light transmission, weatherability, and high adhesion to ensure the quality and long-term stability of PV modules. The importance of adhesives in PV modules is mainly reflected in the following aspects:

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.

In the first half of the year, the total export volume of China's photovoltaic products (silicon wafers, solar cells, solar pv modules) was preliminarily estimated to exceed US$29 billion a year-on-year increase of about 13%. The proportion of exports of silicon wafers and cells has increased, while the proportion of exports of components has decreased.

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.

ETFE is a kind of fluorine-containing polymer thermoplastic material, the chemical name ethylene tetrafluoroethylene copolymer, in the 1970s, by the United States NASA and DuPont company jointly developed, and applied in the field of space. Because ETFE has strong light transmission and heat insulation, it is soon widely used in various fields.

Solar photovoltaic cells (PV cells for short) are used to convert the sun's light energy directly into electricity. The ground photovoltaic system largely uses silicon solar cells based on silicon, which can be divided into monocrystalline silicon, polysilicon and amorphous silicon solar cells. The solar cell module is composed of high-efficiency crystalline silicon solar cells, ultra-white tempered glass, EVA film, transparent TPT backsheet and aluminum alloy frame. It has the characteristics of long service life, strong mechanical resistance to external force etc.

EVA and POE have their own advantages and disadvantages. It can be seen from their performance comparison for photovoltaic films. Referring to the important development direction of film in the future, POE may develop a larger market space.

Photovoltaic cell encapsulation film (EVA) is a thermosetting adhesive film that is used in the middle of laminated glass (EVA is the abbreviation of Ethylene Vinyl Vinyl Acetate Acetate). Due to the superiority of EVA film in adhesion, durability, optical properties, etc., it is more and more widely used in current components and various optical products. EVA film as a part of component for solal cells , it has many advantages. then how is EVA film produced? Below we will briefly introduce the production process of EVA film.Let's go it !