Fig. 4: Table-top gravure-printing of multi-cation flexible PSCs. | Nature Communications

Fig. 4: Table-top gravure-printing of multi-cation flexible PSCs.

From: Roll-to-roll gravure-printed flexible perovskite solar cells using eco-friendly antisolvent bathing with wide processing window

Fig. 4

a Schematic illustration of table-top gravure printing. b SEM image of perovskite film fabricated by table-top gravure printing and subsequent bathing in tBuOH:EA. c Cross-sectional SEM image of flexible PSCs made by table-top gravure printing. Each layer was colored differently to distinguish it from the others. FAPbI3 indicates (FAPbI3)0.95(MAPbBr3)0.05. (inset) Diagram illustrating the structure of device used in this study. d Representative J-V curves of gravure-printed PSCs with Spiro-OMeTAD. Spiro-OMeTAD was deposited by spin-coating (indigo), shear-coating (purple) or gravure-printing (salmon). e A J-V curve of champion device fabricated by gravure-printing. f Efficiency of the champion devices measured by MPPT technique.

Back to article page