Method of formulating perovskite solar cell materials
AssigneeHunt Energy Enterprises, L.L.C.
InventorsMichael D. Irwin, Jerred A. Chute, Vivek V. Dhas
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Abstract
A method for preparing photoactive perovskite materials. The method comprises the step of preparing a lead halide precursor ink. Preparing a lead halide precursor ink comprises the steps of: introducing a lead halide into a vessel, introducing a first solvent to the vessel, and contacting the lead halide with the first solvent to dissolve the lead halide. The method further comprises depositing the lead halide precursor ink onto a substrate, drying the lead halide precursor ink to form a thin film, annealing the thin film, and rinsing the thin film with a second solvent and a salt.
Claims30
A method comprising the steps of:
- preparing a lead halide precursor ink, wherein preparing a lead halide precursor ink comprises the steps of:
- introducing a lead halide into a vessel, wherein the lead halide comprises a mixture of lead (II) chloride and lead (II) iodide;
- introducing a first solvent to the vessel;
- and
- contacting the lead halide with the first solvent to dissolve the lead halide to form the lead halide precursor solution;
- depositing the lead halide precursor ink onto a substrate;
- drying the lead halide precursor ink to form a thin film;
- annealing the thin film;
- and
- rinsing the thin film with a second solvent and a salt selected from the group consisting of methylammonium iodide, formamidinium iodide, guanidinium iodide, 1,2,2-triaminovinylammonium iodide, and 5-aminovaleric acid hydroiodide.
A perovskite material prepared by a process comprising the steps of:
- preparing a lead halide precursor ink, wherein preparing a lead halide precursor ink comprises the steps of:
- introducing a lead halide into a vessel, wherein the lead halide comprises a mixture of lead (II) chloride and lead (II) iodide;
- introducing a first solvent to the vessel;
- and
- contacting the lead halide with the first solvent to dissolve the lead halide;
- depositing the lead halide precursor ink onto a substrate;
- drying the lead halide precursor ink to form a thin film;
- annealing the thin film;
- and
- rinsing the thin film with a second solvent and a salt selected from the group consisting of methylammonium iodide, formamidinium iodide, guanidinium iodide, 1,2,2-triaminovinylammonium iodide, and 5-aminovaleric acid hydroiodide to form the perovskite material.
Dependencies are inferred from the claim text.