# US 9,039,919 B2 · Gel-type polymer electrolyte for dye-sensitized solar cell and dye-sensitized solar cell comprising the same

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- Number: US 9,039,919 B2
- Document ID: US9039919B2
- Status: Granted
- Kind: B2
- Application number: 13/855,061
- Filed: 2013-04-02
- Published: 2013-12-12
- Granted: 2015-05-26
- Earliest claimed: 2012-06-08
- Assignees: Research & Business Foundation Sungkyunkwan University
- Applicants: Research & Business Foundation Sungkyunkwan University
- Inventors: Jong Hyeok Park; Kun Seok Lee
- Web page: https://patentgrep.com/patent/US9039919B2

## CPC

- H01G 9/2009: {Solid electrolytes}
- H01G 9/2013: {the electrolyte comprising ionic liquids, e.g. alkyl imidazolium iodide}
- H01G 9/2018: {characterised by the ionic charge transport species, e.g. redox shuttles}
- H01G 9/2031: {comprising titanium oxide, e.g. TiO2 (H01G9/2036 takes precedence)}
- H01G 9/2059: {comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution}
- Y02E 10/542: Dye sensitized solar cells
- Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- 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

The present disclosure relates to gel-type polymer electrolyte for a dye-sensitized solar cell, a dye-sensitized solar cell comprising the gel-type polymer electrolyte, and a method for manufacturing the dye-sensitized solar cell.

## Claims

### Claim 1

A gel-type polymer electrolyte for a dye-sensitized solar cell, formed from a gelation of a polymer colloid by an electrolytic solution that comprises an organic solvent that includes a nitrile-based solvent.

### Claim 2 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1, wherein the polymer colloid includes one selected from the group consisting of polystyrene, polyethylene, polypropylene, PVDF, PAN, PEO, and their combinations.

### Claim 3 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1,
wherein the nitrile-based solvent includes one selected from the group consisting of acetonitrile, propionitrile, butyronitrile, t-butyl cyanide, valeronitrile, caprylonitrile, heptanenitrile, cyclopentane carbonitrile, cyclohexane carbonitrile, 2-fluorobenzonitrile, 4-fluorobenzonitrile, difluorobenzonitrile, trifluorobenzonitrile, 2-chlorobenzonitrile, 4-chlorobenzonitrile, dichlorobenzonitrile, trichlorobenzonitrile, 2-chloro-4-fluorobenzonitrile, 4-chloro-2-fluorobenzonitrile, phenylacetonitrile, 2-fluorophenylacetonitrile, 4-fluorophenylacetonitrile, and their combinations.

### Claim 4 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1,
wherein the organic solvent includes a mixture of acetonitrile and valeronitrile.

### Claim 5 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1,
wherein the polymer colloid is from 0.1 to 50 parts by weight with respect to 100 parts by weight of the gel-type polymer electrolyte.

### Claim 6 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1,
wherein the organic solvent is from 1 to 50 parts by weight with respect to 100 parts by weight of the gel-type polymer electrolyte.

### Claim 7 (depends on 1)

A manufacturing method of a dye-sensitized solar cell, comprising:
forming a polymer colloid layer on a counter electrode;
forming a semiconductor electrode on the polymer colloid layer; and
injecting a electrolytic solution into the polymer colloid layer to form the gel-type polymer electrolyte of claim 1,
wherein the electrolytic solution includes a nitrile-based solvent.

### Claim 8 (depends on 7)

The manufacturing method of a dye-sensitized solar cell of claim 7,
wherein the polymer colloid includes one selected from the group consisting of polystyrene, polyethylene, polypropylene, PVDF, PAN, PEO, and their combinations.

### Claim 9 (depends on 7)

The manufacturing method of a dye-sensitized solar cell of claim 7,
wherein the nitrile-based solvent includes one selected from the group consisting of acetonitrile, propionitrile, butyronitrile, t-butyl cyanide, valeronitrile, caprylonitrile, heptanenitrile, cyclopentane carbonitrile, cyclohexane carbonitrile, 2-fluorobenzonitrile, 4-fluorobenzonitrile, difluorobenzonitrile, trifluorobenzonitrile, 2-chlorobenzonitrile, 4-chlorobenzonitrile, dichlorobenzonitrile, trichlorobenzonitrile, 2-chloro-4-fluorobenzonitrile, 4-chloro-2-fluorobenzonitrile, phenylacetonitrile, 2-fluorophenylacetonitrile, 4-fluorophenylacetonitrile, and their combinations.

### Claim 10 (depends on 7)

The manufacturing method of a dye-sensitized solar cell of claim 7, wherein the polymer colloid is coated on the counter electrode by spin coating.

### Claim 11 (depends on 1)

A dye-sensitized solar cell comprising a gel-type polymer electrolyte of claim 1.

### Claim 12 (depends on 1)

The gel-type polymer electrolyte for a dye-sensitized solar cell of claim 1,
wherein the polymer colloid has a diameter in a range of from about 10 nm to about 500 nm.