The performance indicators of pv ribbon all have their importance. The type of copper and its purity determine the electrical conductivity of the material and the maximum degree of flexibility that the pv ribbon can achieve. Flux composition, its cover thickness and overlay composition influence the quality of the solder joint and thus the durability of the solar panel.
The high elongation of the pv ribbon is important to prevent solder joint failures between the busbar and the interconnection strip, which can be attributed to the elongation/tension generated by oscillating temperature changes during solar panel operation. The continuous and sometimes particularly strong daily temperature oscillations put solder joints through their paces over the lifetime of the solar panel (25 years on average).
Two parameters that are critical to most pv ribbon manufacturers are flexure and yield strength. Many PV tape manufacturers find it difficult to achieve a high level of tape flexibility while maintaining straightness. Achieving sufficient softness and low curvature can mean the difference between winning and losing a supply contract. As a result, manufacturers must strive to improve their rolling, annealing, tinning, and material handling techniques to meet the ever-increasing product performance specifications.
Thus, the impact of pv ribbon on the power produced by the component is not only the design material of the pv ribbon itself, but also the selection of the pv ribbon, the process of lamination and the quality control of pv ribbon production. All aspects of the pv ribbon need to be understood, although the industry may be more focused on the encapsulation material – the cell.