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This article focuses on the advantages and disadvantages of double - sided and single - sided coated fluorinated backsheets for photovoltaic modules. Double - sided coated ones offer excellent weather resistance, high mechanical strength, and good compatibility, but they are costly, less environmentally friendly, and heavy. Single - sided coated backsheets have cost and weight advantages, and better environmental performance, yet their weather resistance is slightly weaker, the process is more complex, and market recognition is low. Overall, the choice between them depends on specific project requirements and application scenarios.

Electrical connection materials are crucial components in photovoltaic (PV) modules for achieving current conduction, and their performance directly impacts the module's conductive efficiency, reliability, service life, and safety. The following analysis explores the specific impacts of core materials such as solder ribbons, busbars, and junction boxes on module performance :

Photovoltaic junction boxes are crucial components in PV modules for connection and protection. Integrated ones have a simple structure with one box housing diodes and cables, offering low - cost and easy installation. However, they face heat - dissipation and resistance issues in high - power applications. Split - type junction boxes consist of multiple boxes, each with one diode and separated positive/negative cables. They have excellent heat - dissipation, can boost module power and reduce cable usage, yet are costlier and require more complex installation. The former suits small - scale distributed projects, while the latter is more suitable for large - scale ground - mounted power plants.