Flash‐Lamp Processing of Charge Extraction Layers for Polymer Solar Cells

Thermal annealing (TA) is one of the most used processing techniques for fabrication polymer solar cells. The method not only to dry solution-processed films but also improving electrical conductivity and optical absorption materials after coating as films. Its use questionable in combination with high throughput manufacturing such roll-to-roll large-scale production since times several minutes already put up demands on oven lengths. Furthermore, commonly flexible substrates are compatible temperatures. Therefore, there a need more rapid treatment techniques, which do negatively affect plastic substrate. Herein, it successfully demonstrated that flash lamp (FLA) can be valid alternative TA. FLA technique applied at various pulse durations thus energy doses PEDOT:PSS SnO2 charge extraction layers conventional inverted cells architectures. In PM6:Y6 photoactive layer, obtained device's performances comparable or even better than devices treated classical TA hotplate. terms efficiency, clearly efficient TA, size prototypes.