Perovskite, Module Manufacturing, Laser Processing, Dead Zone
Summary / Abstract:
A key to the production of large-format perovskite solar modules is the monolithic series interconnection of neighboring cells with minimal power losses, which requires the optimization of the cell width and the minimization of the interconnection width. The optimal width of the cell strips was calculated to be 6 mm based on loss analysis, which was also confirmed experimentally by identifying the highest power conversion efficiencies (PCE) of laser-patterned mini-modules. By varying the scribe line spacings (P1/P2 and P2/P3), an optimal interconnection width (yielding the highest PCE) of about 230 µm was determined, corresponding to directly adjacent scribe lines and a geometric fill factor (GFF) of 94.6 %. This is an improvement compared to results achieved so far.