Patent ID: 11968886
Assignee: NANJING UNIVERSITY OF POSTS AND TELECOMMUNICATIONS
Field: nan (nan)
Classification: CPC H  Y | IPC H

Claim 0:
1. A preparation method of a perovskite film based on semicarbazide hydrochloride (SEM-HCl) additive, comprising:
spin coating a perovskite solution with a doping concentration of 3 moles percent (mol %) of SEM-HCl on a hole transport layer, and adding an anti-solvent dropwise during the spin coating to obtain a film, placing the film on a hot stage with a temperature of 70 degree Celsius (° C.), and performing an annealing treatment on the film for 10 minutes (min) to obtain the perovskite film; and
wherein the perovskite solution is a mixed solution of a SEM-HCl solution and a tin-based perovskite precursor solution, the tin-based perovskite precursor solution is a mixed solution of perovskite materials dissolved in a mixed solution of N, N-dimethylformamide and dimethyl sulfoxide, and the perovskite materials comprise tin iodide (SnI2), formamidinium iodide (FAI), methylammonium iodide (MAI) and tin fluoride (SnF2).