Solar modules require photovoltaic (PV) packing sheets because they offer insulation, protection, and other features. These films are essential for extending the life and increasing the efficiency of PV modules when used with additives. The purpose of this article is to give a thorough introduction to PV packaging films, emphasize the importance of additives, and investigate their interactions, particular roles, and ways in which they improve the durability and performance of PV films.

Photovoltaic Packaging Films

PV packaging films are specialized materials that are used to enclose and safeguard PV cells within solar modules. Usually, they are made up of several layers, each of which has a distinct function. The following are the fundamental parts of PV packaging films:

a) Encapsulant Layer: The main element that comes into direct contact with and encases the PV cells is the encapsulant layer. It offers mechanical support, electrical insulation, and defense against environmental variables and moisture intrusion. Materials for encapsulant layers that are often utilized are Polyolefin Elastomer (POE) and Ethylene Vinyl Acetate (EVA).

b) Backsheet Layer: This layer, which is located on the back of the module, protects against moisture, UV rays, and environmental pressures in addition to offering electrical insulation. Usually, it is made of polyester film bonded with a fluoropolymer layer or materials such as Tedlar®.

c) Extra Layers: To improve certain qualities or functions, extra layers such barrier films, adhesion boosters, and protective films may be added to PV packaging films.

Photovoltaic Packaging Film Additives

PV packaging films are made more efficient, durable, and perform better overall when additives are added. The yield of photovoltaic panels is significantly impacted by the adhesion between solar silicon crystal panels and photovoltaic packaging sheets. Adding chemicals to solar packaging films is a crucial step in achieving this adherence. The yield will increase when additives are used because the film’s and the solar silicon crystal panel’s adhesion will be more effective.
Relationship and Purpose of Additives: PV packaging sheets and additives combine to increase the longevity and efficiency of solar modules. Among the uses and advantages of additives are:

Protection from Environmental Factors

The performance and longevity of the film are preserved by additives such UV stabilizers and antioxidants, which shield it from oxidation, UV radiation, and other environmental pressures.

b) Moisture Resistance: By preventing moisture infiltration into the module by moisture barrier agents and appropriate film construction, water damage-related corrosion, electrical failures, and decreased efficiency are prevented.

c) Improved Encapsulation and Adhesion: Adhesion promoters strengthen the bonds between various layers, guaranteeing dependable encapsulation and lowering the risk of moisture infiltration or delamination.

d) Better Thermal Management: By increasing the film’s thermal conductivity, thermal conductive fillers help to effectively dissipate heat and keep the PV cells from overheating.

Improving Lifespan and Efficiency

Manufacturers should concentrate on the following areas to increase PV packaging film lifespan and efficiency:
a) The Best Material Choice: selecting the best materials for the backsheet and encapsulant layers while taking compatibility with additives, transparency, moisture resistance, and UV stability into account.

b) Additive Formulation: This involves carefully choosing and combining additives to achieve certain performance goals, such moisture resistance, UV stability, and temperature control.

c) Quality Control: Strictly enforcing quality control procedures, such as adequate additive mixing and dispersion throughout film manufacture, to guarantee packaging films operate consistently and dependably.

d) Module Design and Integration: To maximize the overall performance and dependability of PV modules, take into account elements including module design, cell positioning, and interconnection techniques.

In conclusion, additives and photovoltaic packaging sheets work together to improve the longevity and efficiency of PV modules. To increase the effectiveness and longevity of solar packaging films, it is important to take into account factors such as the best possible material selection, formulation of additives, quality control, and integration of module designs. The development of dependable and high-performance PV modules may be further advanced by the solar industry by consistently enhancing these elements.COACE has a team of senior engineers and PhD holders that oversee the R&D, manufacture, and servicing of photovoltaic packaging film additives. The majority of consumers use COACES solar packaging film additives because of their high resistivity, good fluidity, low crystal point, high grafting rate, and high transparency!