# US 2022/0285642 A1 · Organic Pigment Coating for Electronic Devices, Perovskite Solar Cells, and Methods

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 2022/0285642 A1
- Document ID: US20220285642A1
- Status: Published application
- Kind: A1
- Application number: 17/189,662
- Filed: 2021-03-02
- Published: 2022-09-08
- Earliest claimed: 2021-03-02
- Assignees: The Florida State University Research Foundation, Inc.
- Applicants: The Florida State University Research Foundation, Inc.
- Inventors: Biwu Ma; Qingquan He
- Web page: https://patentgrep.com/patent/US20220285642A1

## CPC

- H10K 71/12: using liquid deposition, e.g. spin coating
- B05D 1/005: {Spin coating}
- H10K 30/10: comprising heterojunctions between organic semiconductors and inorganic semiconductors
- H10K 30/40: comprising a p-i-n structure, e.g. having a perovskite absorber between p-type and n-type charge transport layers
- H10K 30/88: Passivation; Containers; Encapsulations
- H10K 71/40: Thermal treatment, e.g. annealing in the presence of a solvent vapour
- H10K 85/50: Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3
- H10K 30/50: Photovoltaic [PV] devices
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

Methods of passivating a surface. The methods may include providing a mixture including a liquid and a derivative of quinacridone, applying the mixture to a first surface of a film that includes a metal halide perovskite, and annealing the film for a time and a temperature effective to convert the derivative of quinacridone to quinacridone. Composite materials and electronic devices also are provided.

## Claims

### Claim 1

A method of passivating a surface, the method comprising:
providing a mixture comprising a liquid and a derivative of quinacridone, wherein the derivative of quinacridone is at least partially dissolved in the liquid;
applying the mixture to a first surface of a film, wherein the film comprises a metal halide perovskite; and
annealing the film for a time and a temperature effective to convert the derivative of quinacridone to quinacridone.

### Claim 2 (depends on 1)

The method of claim 1, wherein the derivative of quinacridone is a compound of the following formula:
wherein R1 and R2 are independently selected from a C1-C5 hydrocarbyl.

### Claim 3 (depends on 1)

The method of claim 1, wherein the derivative of quinacridone is di-tert-butyl-7,14-dioxo-7,14-dihydroquinolino[2,3-b]acridine-5,12-dicarboxylate, which has the following structure:

### Claim 4 (depends on 1)

The method of claim 1, wherein the applying of the mixture to the surface of the film comprises spin-coating the mixture to the surface of the film.

### Claim 5 (depends on 1)

The method of claim 1, wherein the metal halide perovskite comprises methylammonium lead iodide (MAPbI3).

### Claim 6 (depends on 1)

The method of claim 1, wherein the liquid comprises isopropanol, chlorobenzene, or a combination thereof.

### Claim 7 (depends on 1)

The method of claim 1, wherein a concentration of the derivative of quinacridone in the mixture is about 1.5 mg/mL to about 2.5 mg/mL.

### Claim 8 (depends on 1)

The method of claim 1, wherein the time is about 10 minutes to about 20 minutes, and the temperature is about 135° C. to about 155° C.

### Claim 9

A composite material comprising:
a film comprising a metal halide perovskite, the film having a first side and a second side opposite the first side; and
a coating comprising quinacridone, wherein the coating at least partially coats the first side of the film.

### Claim 10 (depends on 9)

The composite material of claim 9, wherein the metal halide perovskite comprises methylammonium lead iodide (MAPbI3).

### Claim 11 (depends on 9)

The composite material of claim 9, wherein the film has a thickness of about 460 nm to about 500 nm.

### Claim 12 (depends on 9)

The composite material of claim 9, wherein the coating completely coats the first side of the film.

### Claim 13 (depends on 9)

An electronic device comprising:
an electrode;
the composite material of claim 9; and
a counter electrode,
wherein the composite material is arranged between the electrode and the counter electrode.

### Claim 14 (depends on 13)

The electronic device of claim 13, further comprising a charge transport layer arranged between the composite material and the counter electrode.

### Claim 15 (depends on 14)

The electronic device of claim 14, wherein (i) the electrode contacts the second side of the composite material, and (ii) the charge transport layer contacts (a) the counter electrode and (b) the coating comprising quinacridone.

### Claim 16 (depends on 15)

The electronic device of claim 15, wherein the electrode comprises indium tin oxide; the charge transport layer comprises 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9′-spirobifluorene (spiro-OMeTAD); and the counter electrode comprises gold.

### Claim 17 (depends on 14)

The electronic device of claim 14, wherein the charge transport layer is a hole transport layer.

### Claim 18 (depends on 13)

The electronic device of claim 13, wherein the electronic device is a solar cell.

### Claim 19 (depends on 18)

The electronic device of claim 18, wherein the solar cell, after 240 hours of storage at 85° C., exhibits a power conversion efficiency that is equal to or greater than 80% of an initial power conversion efficiency measured prior to storage.

### Claim 20 (depends on 18)

The electronic device of claim 18, wherein the solar cell, after 1000 hours of storage at ambient conditions, exhibits a power conversion efficiency that is equal to or greater than 90% of an initial power conversion efficiency measured prior to storage.