Perovskite solar cell and manufacturing method

Patent metadata

Field	Value
Publication number	US-12376486-B2
Application number	US-202318197731-A
Country	US
Kind code	B2
Filing date	May 16, 2023
Priority date	Dec 31, 2021
Publication date	Jul 29, 2025
Grant date	Jul 29, 2025

Abstract

The present disclosure provides a perovskite solar cell comprising at least an electrode, an electron transport layer, a hole transport layer, a perovskite layer and a passivation layer. In the perovskite solar cell, the passivation layer may contain a passivator, the passivatormay comprise an aza fused bicyclic compound and/or an organic salt formed from the aza fused bicyclic compound and an acid, each fused ring in the aza fused bicyclic compound may be independently a five-membered or six-membered saturated ring, unsaturated ring or aromatic ring, the fused ring of the aza fused bicyclic compound may contain 1-5 nitrogen atoms, and the fused ring may be an unsubstituted ring or a ring substituted with one or two substituents having 1-3 carbon atoms.

First claim

The invention claimed is:

1. A perovskite solar cell, characterized by
comprising at least an electrode, an electron transport layer, a hole transport layer, a perovskite layer, a passivation layer, and an optional substrate layer, wherein the passivation layer contains a passivator, the passivator comprises an organic salt formed from an aza fused bicyclic compound and an acid, each fused ring in the aza fused bicyclic compound is independently a five-membered or six-membered saturated ring, unsaturated ring or aromatic ring, the fused ring of the aza fused bicyclic compound contains 1-5 nitrogen atoms, and
the fused ring is an unsubstituted ring or a ring substituted with one or two substituents having 1-3 carbon atoms,
wherein the passivation layer is a layer formed by applying an anti-solvent in which the passivator is dissolved to the perovskite layer, and a concentration of the passivator in the anti-solvent is in a range of 0.5-3 mmol/mL, and
the acid radical ion is selected from an acid radical ion of one of acetic acid, phosphoric acid, sulfonic acid, hydrofluoric acid, hydrochloric acid, hydrobromic acid or hydroiodic acid.

2. The perovskite solar cell of claim 1 , characterized in that
the aza fused bicyclic compound is selected from any one of pteridine, 1,5,7-triazabicyclo(4.4.0) dec-5-ene, quinazoline, quinoline, 1,5-diazabicyclo[4.3.0]-5-nonene, imidazo[1,2-a]pyrimidine, 5,6,7,8-tetrahydroindazine, 1-methyl-2,3-dihydro-1H-pyrrolizine or 2,4-dimethylquinoline.

3. The perovskite solar cell of claim 1 , characterized in that
the anti-solvent is selected from at least one of toluene, chlorobenzene, dichlorobenzene, ethyl acetate, diethyl ether, benzene, anhydrous ethanol, isopropanol, butanol, chloroform, methyl butyrate, anisole, xylene or trimethylbenzene.

4. The perovskite solar cell of claim 1 , characterized in that
a molar ratio of perovskite in the perovskite layer to the passivator in the passivation layer is 100-800.

5. A power generation device, characterized by
comprising the perovskite solar cell of claim 1 .

6. A power consuming device, characterized by
comprising the perovskite solar cell of claim 1 .

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Liang Weifeng
• Sun Juanjuan
• Chen Changsong
• Tu Bao
• Guo Wenming
• Guo Yongsheng
• Chen Guodong
• Luan Bo

Classifications

• H10K30/86 Primary

  Layers having high hole mobility, e.g. hole-transporting layers or electron-blocking layers · CPC title

• H10K71/40

  Thermal treatment, e.g. annealing in the presence of a solvent vapour · CPC title

• H10K71/12

  using liquid deposition, e.g. spin coating · CPC title

• H10K30/50

  Photovoltaic [PV] devices · CPC title

• H10K30/81

  Electrodes · CPC title