Patent ID: 11953821
Assignee: CUBICPV INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  B  C  H  Y | IPC B  C  G  H

Claim 11:
12. A method comprising the steps of:
preparing a thin-film precursor ink, wherein preparing the thin-film precursor ink comprises the steps of:
contacting a lead halide with a first solvent to dissolve the lead halide to form a lead halide solution;
contacting a Group 1 metal halide with a second solvent to dissolve the group 1 metal halide to form a Group 1 metal halide solution;
contacting the lead halide solution with the Group 1 metal halide solution to form the thin-film precursor ink;
depositing the thin-film precursor ink onto a substrate; drying the thin-film precursor ink to form a thin film; annealing the thin film; and
rinsing the thin film with a salt solution comprising a third solvent and a salt selected from the group consisting of methylammonium halide, formamidinium halide, guanidinium halide, ethene tetramine halide, imidazolium halide, 1,2,2-triaminovinylammonium halide, and 5-aminovaleric acid hydrohalide.