Method of formulating perovskite solar cell materials
US11800726B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2022 |
| Grant date | Oct 24, 2023 |
| Priority date | — |
| Expiry date | Oct 20, 2042 |
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 bismuth halide precursor ink. Preparing a bismuth halide precursor ink comprises the steps of introducing a bismuth halide into a vessel; introducing a first solvent to the vessel; and contacting the bismuth halide with the first solvent to dissolve the bismuth halide to form the bismuth halide precursor ink; depositing the bismuth halide precursor ink onto a substrate; drying the bismuth 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.