Method for recovering valuable material from perovskite solar cell
US12344916B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 8, 2022 |
| Grant date | Jul 1, 2025 |
| Priority date | — |
| Expiry date | Dec 20, 2043 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC22B26/10
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for recovering a valuable material from a perovskite solar cell includes immersing a perovskite solar cell device in an organic solvent to dissolve a monovalent metal cation, a divalent metal cation, and two halogen anions in the organic solvent, followed by adding an oxidizing agent and conducting a heating treatment to form a solid phase residue and a halogen molecule, dissolving the halogen molecule in deionized water to form a halogen solution, rinsing the solid phase residue with deionized water to obtain a solid phase and a liquid phase, calcining the solid phase into a metal oxide, or mixing the solid phase with the halogen solution to obtain a first metal halide, subjecting the liquid phase to an extraction treatment to form an oil phase layer, followed by conducting a back-extraction treatment, adding the halogen solution, and conducting a vacuum concentration treatment to obtain a second metal halide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.