Method of formulating perovskite solar cell materials
US12302681B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2023 |
| Grant date | May 13, 2025 |
| Priority date | — |
| Expiry date | Sep 18, 2043 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E10/549
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method for preparing photoactive perovskite materials. The method comprises the steps of preparing a lead and tin halide precursor ink. Preparing a lead and tin halide precursor ink comprises the steps of introducing a lead halide and a tin halide into a vessel; introducing a first solvent to the vessel; and contacting the lead halide and the halide with the first solvent to dissolve the lead halide and the tin halide to form the lead and tin halide precursor ink; depositing the lead and tin halide precursor ink onto a substrate; drying the lead and tin halide precursor ink to form a thin film; annealing the thin film; and rinsing the thin film with a solvent comprising: a second solvent; a first salt selected from the group consisting of methylammonium halide, formamidinimum halide, guanidinium halide, 1,2,2-triaminovinylammonium halide, and 5-aminovaleric acid hydrohalide; and a second salt selected from the group consisting of methylammonium halide, formamidinimum halide, guanidinium halide, 1,2,2-triaminovinylammonium halide, and 5-aminovaleric acid hydrohalide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.