| abstract |
The invention discloses a regular oblique hexagonal columnar Pb-MOF crystal, which contains Pb, C and O elements, and its atomic percentages are respectively 5-10%, 55-60% and 35-40%; the bottom surface is a regular hexagon. The side length is 5-10nm, the column height is 1-3nm, and the inclined angle between the oblique side and the bottom surface is 40-60°; a regular oblique hexagonal columnar SP-MOF crystal with halo, containing Pb , C, N, O, the atomic percentages are 1‑5%, 75‑80%, 3‑5% and 15‑20% respectively, the side length of the regular hexagon on the bottom is 1.2‑1.5μm, and the cylinder The height is 0.7-1 μm, the inclined angle between the oblique side surface and the bottom surface is 40-60°, and there is a halo with a width of 50-60 nm at the periphery of the crystal. Applying SP‑MOF to the hole transport layer of perovskite solar cells can improve the cell’s moisture resistance and photoelectric conversion efficiency. |