Preparation of High Geometric Filling Factor Perovskite Module and Feasibility Study on Electrocatalytic Hydrogen Production

In recent years, perovskite solar cells have achieved high efficiency in small areas, but the industrialization of is still hampered by loss during area scaling. Series modules are currently most widely used and effective modular process for cells, a that requires patterning layer stack individual cells. This interconnection scheme consists three lines, P1–P3, which ablated using pulsed laser beam. this work, we developed an efficient module with geometric fill factor (GFF) based on two-step spin-coating method optimizing ablation step. We constructed entire device structure means picosecond green laser, meanwhile, dead greatly reduced parameters process, finally achieving ultra-high GFF over 99%. addition, investigated effect poor P2 P3 compared performance before after optimization. obtained maximum photoelectric conversion 22.79% aperture 12.6 cm2. Concurrently, conducted electrocatalytic hydrogen production experiments prepared modules, experimental results also shown excellent good prospects.