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US 12,723,323 B2Granted
Ligand-free processable perovskite semiconductor ink
AssigneeThe Regents of the University of California
InventorsPeidong Yang, Maria C. Folgueras
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Abstract
A method of forming a phase-pure Cs2TeX6 powder can include: dissolving a precursor TeX in a solution; rapidly adding a stoichiometric amount of respective CsX precursor to the solution, resulting in Cs2TeX6 powder immediately precipitating out of the solution; removing excess solution from the solution, resulting in the phase-pure Cs2Te X6 powder; washing the phase-pure Cs2Te X6 powder; and drying the phase-pure Cs2Te X6 powder.
Claims20
A method of forming a phase-pure Cs2TeX6 powder, the method comprising:
- dissolving a precursor TeX4 in a solution;
- rapidly adding a stoichiometric amount of respective CsX precursor to the solution, resulting in Cs2TeX6 powder immediately precipitating out of the solution;
- removing excess solvent from the solution, resulting in the phase-pure Cs2TeX6 powder;
- washing the phase-pure Cs2TeX6 powder;
- and
- drying the phase-pure Cs2TeX6 powder, wherein the phase-pure Cs2TeX6 powder includes Cs2TeBr6 and the precursor TeX4 includes TeBr4, wherein the TeBr4 is dissolved in methanol.
3 more elements
A method of forming a phase-pure Cs2TeX6 powder, the method comprising:
- dissolving a precursor TeX4 in a solution;
- rapidly adding a stoichiometric amount of respective CsX precursor to the solution, resulting in Cs2TeX6 powder immediately precipitating out of the solution;
- removing excess solvent from the solution, resulting in the phase-pure Cs2TeX6 powder;
- washing the phase-pure Cs2TeX6 powder;
- and
- drying the phase-pure Cs2TeX6 powder, wherein the phase-pure Cs2TeX6 powder includes Cs2TeI6 and the precursor TeX4 includes TeI4, wherein the TeI4 is dissolved in acetonitrile.
3 more elements
Dependencies are inferred from the claim text.