Picosecond laser etching of PI film solar cells

       Solar thin film batteries can be divided into two categories: hard substrates and flexible substrates. Flexible thin-film solar cells refer to thin-film solar cells made on flexible materials (such as stainless steel, polyimide, etc.). Compared with thin-film solar cells on hard substrates (such as glass), flexible thin-film solar cells are flexible and not fragile. , Light weight and other advantages, widely used. Let's introduce the picosecond laser cutting machine to cut the flexible solar cell film with polyimide (PI) as the substrate.

       The pulse width of a picosecond laser is very short, only a few picoseconds, and it has a very high peak power. When it interacts with the material, the thermal effect of the laser etched part is small, resulting in a "cold" processing effect, avoiding unnecessary thermal effects, no heat-affected zone, and smooth edges, so picosecond lasers can be used for high-precision processing. The picosecond laser has a wavelength ranging from infrared to ultraviolet, and can handle a wide range of materials, which is suitable for processing applications in many occasions.

       With its excellent processing capabilities, picosecond lasers have a very high market prospect in the field of solar thin-film battery processing. During the processing of solar thin-film batteries on PI substrates, the picosecond laser etching machine has excellent laser parameters and stable performance. It not only has excellent processing effects, but also saves production costs. With the winding processing technology of flexible thin-film batteries for online processing, it can greatly Improve product quality and production efficiency.