It is all in the Pattern—High‐Efficiency Power Extraction from Polymer Solar Cells through High‐Voltage Serial Connection

To infinity and beyond! Large-scale deployment methods for polymer solar cells are demonstrated through the near-infinite serial connection of individual solar cells by printing an indium-tin-oxide-free solar cell stack outside of vacuum. A careful choice of pattern ensures a high device yield of 16 000 solar cells to yield a total voltage of 8.2 kV. A robustness towards partial shadowing or poorly performing individual solar cells in the array is a unique property of polymer solar cells.