Granted Patent B2

US 12,213,330 · App. 17/630,356 · Granted Jan 28, 2025

Inventors: Shuai Gu (Shanghai, CN); Lei Xing (Shanghai, CN); Jianguo Yu (Shanghai, CN)

Assignee: East China University of Science and Technology

H10K30/88C09K11/02C09K11/0827H10K71/00

Abstract

Claims (12)

1. A precursor solution, wherein the solute of the precursor solution comprises a metal halide, the solvent of the precursor solution is an organic solvent, and the precursor solution contains nanobubbles, wherein the diameter of the nanobubbles is not more than 1000 nm, and the zeta potential of the precursor solution is not more than −20 mV.

2. The precursor solution of claim 1 , wherein the metal halide comprises at least one of lead halide, tin halide, indium halide, silver halide, antimony halide, bismuth halide, lithium halide, beryllium halide, sodium halide, magnesium halide, aluminum halide, potassium halide, calcium halide, scandium halide, titanium halide, vanadium halide, chromium halide, manganese halide, iron halide, cobalt halide, nickel halide, copper halide, zinc halide, gallium halide, germanium halide, rubidium halide, strontium halide, yttrium halide, zirconium halide, niobium halide, molybdenum halide, technetium halide, ruthenium halide, rhodium halide, palladium halide, cadmium halide, cesium halide, barium halide, lanthanide halide, hafnium halide, tantalum halide, tungsten halide, rhenium halide, osmium halide, iridium halide, platinum halide, gold halide, mercury halide, thallium halide, polonium halide, and actinium halide.

3. The precursor solution of claim 1 , wherein the organic solvent comprises at least one of an aromatic hydrocarbon-based organic solvent, an aliphatic hydrocarbon-based organic solvent, an alicyclic hydrocarbon-based organic solvent, a halogenated hydrocarbon-based organic solvent, an alcohol-based organic solvent, an ether-based organic solvent, an ester-based organic solvents, a ketone-based organic solvent, a pyridine-based organic solvent, a phenol-based organic solvent, a nitrile-based organic solvent, and a sulfone-based organic solvent.

4. The precursor solution of claim 1 , wherein the solubility of the solute in the organic solvent containing nanobubbles is higher than that of without nanobubbles.

5. A method for preparing the precursor solution of claim 1 , which comprising the following steps:

(1) preparing an organic solvent contains nanobubbles;

(2) dissolving a solute into the organic solvent contains nanobubbles.

6. The method of claim 5 , wherein the process of preparing nanobubbles in step (1) comprises treating the organic solvent using at least one of the following: mechanical stirring, sonic vibration, electrolysis, atomization, hydrodynamic cavitation, optical cavitation, and the like.

7. A perovskite absorption layer, wherein the perovskite absorption layer comprises an organic component and a precursor solution of claim 1 , wherein the organic component includes at least one of methyl ammonium iodide, methyl bromide, chloromethylammonium, formamidine hydroiodide, formamidine hydrobromide, and formamidine hydrochloride.

8. The perovskite absorption layer of claim 7 , wherein the organic component is added to the precursor solution and then coated on the surface of a substrate to form a perovskite absorption layer.

9. The perovskite absorption layer of claim 7 , wherein the precursor solution is coated on the surface of a substrate, and then the organic component is coated thereon to form a perovskite absorption layer.

10. A perovskite solar cell, wherein the perovskite solar cell comprises the perovskite absorption layer of claim 7 , a substrate, a carrier transport layer, and an electrode.

Assignments (1)

Priority Claims (1)

Continuity (1)

References Cited (20)