| abstract |
The present application discloses a preparation method and application of a perovskite material layer in a concentrating perovskite solar cell. The preparation method includes: S1, configuring a first perovskite solution from a solute and a solvent, and the solute includes a precursor material or The perovskite single crystal, and the first nano-conducting particles; S2, the first perovskite solution obtained in S1 is wet-processed into a film, and subjected to annealing treatment, the annealing temperature is 100-150° C., and the time is 10-30min, forming The first perovskite crystal layer has a thickness of 100-300 nm, and has channels at the grain boundaries; S3, a barrier layer for preventing charge recombination is formed on the surface of the first perovskite crystal layer obtained at S2; S4, at S3 On the formed barrier layer, a second perovskite solution is used to form a second perovskite crystal layer, the thickness of which is smaller than that of the first perovskite crystal layer, and channels are also provided at the grain boundaries. The concentrating perovskite solar cell is made from the perovskite material layer prepared by the invention, and the device efficiency is high. |