P1, P2 and P3 laser scribing are three different but closely connected steps in perovskite solar cell module manufacturing. P1 defines the bottom electrode isolation, P2 creates the interconnection channel, and P3 completes the final cell separation. For buyers, the best equipment should provide not only laser hardware, but also process testing, alignment control, stable scribing quality and upgrade flexibility for R&D, pilot line and scalable production.
