# US 2013/0280855 A1 · Method for producing compound having chalcopyrite structure

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

- Number: US 2013/0280855 A1
- Document ID: US20130280855A1
- Status: Published application
- Kind: A1
- Application number: 13/997,815
- Filed: 2010-12-28
- Published: 2013-10-24
- Earliest claimed: 2010-12-28
- Assignees: Tohoku Seiki Industries, Ltd.
- Inventors: Koji Moriya; Jiro Nagaoka; Yoshinobu Takano; Yuuki Sano; Keitaro Harada; Masayoshi Yokoo
- Web page: https://patentgrep.com/patent/US20130280855A1

## CPC

- H10F 77/121: comprising only selenium or only tellurium
- B82Y 30/00: Nanotechnology for materials or surface science, e.g. nanocomposites
- C01B 19/002: {Compounds containing, besides selenium or tellurium, more than one other element, with -O- and -OH not being considered as anions}
- H10F 77/126: {comprising only Group I-III-VI chalcopyrite materials, e.g. CuInSe2, CuGaSe2 or CuInGaSe2 [CIGS]}
- H10P 14/265: {using solutions}
- H10P 14/3436: {being chalcogenide semiconductor materials not being oxides, e.g. ternary compounds}
- H10P 14/3461: {Nanoparticles}
- C01P 2004/64: Nanometer sized, i.e. from 1-100 nanometer
- Y02E 10/541: CuInSe2 material PV cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- C01B: NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; {METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C}
- H10P: GENERIC PROCESSES OR APPARATUS FOR THE MANUFACTURE OR TREATMENT OF DEVICES COVERED BY CLASS H10
- C01P: INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS

## Abstract

To obtain high-quality chalcopyrite particles having a small particle size using a relatively inexpensive raw material in a simple and easy process in which complicated equipment (such as vacuum equipment) is not necessary. Provided is a method for producing a compound having a chalcopyrite structure represented by a compositional formula: ABC2, the method including: a step of dissolving a Group 11 element A, a Group 13 element B, and a Group 16 element C of the periodic table in a solvent to prepare a solution; and a step of contacting the solution with a reducing agent.

## Claims

### Claim 1

A method for producing a compound having a chalcopyrite structure represented by a compositional formula: ABC2, the method comprising:
a step of dissolving a Group 11 element A, a Group 13 element B, and a Group 16 element C of the periodic table in a solvent to prepare a solution; and
a step of contacting the solution with a reducing agent.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the compound having a chalcopyrite structure is present in a dispersed state in the solution.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the compound having a chalcopyrite structure includes particles in size from nanometer to submicron order.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the Group 11 element A, the Group 13 element B, and the Group 16 element C are prepared in a form of a compound or a single substance having solubility in the solvent at 20±15° C.

### Claim 5 (depends on 4)

The method according to claim 4, wherein in the compound of the Group 16 element C, the valence of the Group 16 element C is not −II.

### Claim 6 (depends on 1)

The method according claim 1, wherein the solvent comprises at least one of a polar solvent and a nonpolar solvent.

### Claim 7 (depends on 1)

The method according claim 1, wherein the polar solvent and the nonpolar solvent are used in combination as the solvent and these solvents are contacted with a phase-transfer catalyst.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the reducing agent is at least one selected from the group consisting of a hydride reducing agent, hydrazine, oxalic acid, ascorbic acid, formaldehyde, acetaldehyde, and sodium sulfite, or a combination of any thereof.

### Claim 9 (depends on 1)

A method for producing a coating type material or a physical vapor deposition (PVD) material using a compound having a chalcopyrite structure produced by the method according to claim 1.

### Claim 10 (depends on 1)

A method for producing an optoelectronic device using a compound having a chalcopyrite structure produced by the method according to claim 1.

### Claim 11 (depends on 10)

The method according to claim 10, wherein the optoelectronic device is a solar cell or a photodiode