FIG. 5 shows the J-V curve of a perovskite solar cell fabricated with inkjet infiltration of perovskite precursor ink in accordance with an embodiment of the invention. The active area of the cell was 0.16 cm2 which was defined by the aperture area of the black tape mask.
FIG. 6 shows the results of a one sub soaking test at 35° C. of a batch of nine perovskite solar cells produced in accordance with an embodiment of the invention.
FIG. 7 shows J-V curves of a fresh perovskite solar cell (in blue) and aged (stored in vacuum for 3 weeks, in red), produced in according to embodiments of the invention.
FIG. 8 shows a) Fujifilm's Dimatix inkjet printer (Model DMP-2831) which was used for depositing a perovskite in accordance with an embodiment of the invention, and the b) printer cartridge filled with perovskite precursor ink and used with the device shown in a).
FIG. 9 shows cross-sectional SEM images of triple layer (TiO2/ZrO2/C) perovskite solar cells fabricated in accordance with embodiments of the invention.
FIG. 10 schematically shows the structure of a solar cell according to an embodiment of the invention.
FIG. 11 shows photographs of an ink in accordance with the invention (left vial) compared to an ink with a conventional composition (right vial). Panels a)-b) show front and back views of the vials directly after preparation. Panel c) shows the ink after 20 minutes at room temperature.
