| abstract |
The invention relates to a Schiff alkali metal complex and a preparation method thereof, a perovskite solar cell and a preparation method thereof. The above-mentioned Schiff alkali metal complex has the structural formula shown below: In the formula, M is a divalent metal ion, R 1 , R 2 , R 3 and R 4 are each independently selected from hydrogen or alkoxy, and at least one of R 1 , R 2 , R 3 and R 4 is an alkane Oxygen. The above-mentioned Schiff alkali metal complexes are inexpensive, have excellent semiconducting properties, and have good solubility in organic solvents. The hole transport layer can effectively improve the device stability of the perovskite solar cell. Moreover, the alkoxy substituents on the periphery of the above-mentioned Schiff alkali metal complexes help to improve the hydrophobic properties of the materials, can effectively resist the invasion of water molecules, can effectively protect the perovskite light-absorbing layer, and can further improve the life and stability of the device. |