# US 9,039,935 B2 · Photoelectric conversion material containing fullerene derivative

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- Number: US 9,039,935 B2
- Document ID: US9039935B2
- Status: Granted
- Kind: B2
- Application number: 12/299,898
- Filed: 2007-05-02
- Published: 2009-08-06
- Granted: 2015-05-26
- Earliest claimed: 2006-05-09
- Assignees: Japan Science and Technology Agency
- Applicants: Eiichi Nakamura; Yutaka Matsuo; Katsuhiko Kanaizuka
- Inventors: Eiichi Nakamura; Yutaka Matsuo; Katsuhiko Kanaizuka
- Web page: https://patentgrep.com/patent/US9039935B2

## CPC

- C07C 63/49: containing rings other than six-membered aromatic rings
- B82Y 10/00: Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
- H10K 30/50: Photovoltaic [PV] devices
- H10K 85/215: {comprising substituents, e.g. PCBM}
- H01B 1/04: mainly consisting of carbon-silicon compounds, carbon or silicon
- H10F 10/00: Individual photovoltaic cells, e.g. solar cells (electrolytic light-sensitive devices, e.g. dye-sensitised solar cells, H01G9/20)
- Y02E 10/50: Photovoltaic [PV] energy
- Y02E 10/549: Organic PV cells
- Y10S 977/738: Modified with biological, organic, or hydrocarbon material
- Y10S 977/948: Energy storage/generating using nanostructure, e.g. fuel cell, battery
- C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS
- B82Y: SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H01B: CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES (selection for magnetic properties H01F1/00; waveguides H01P {; printed circuits H05K})
- H10F: INORGANIC SEMICONDUCTOR DEVICES SENSITIVE TO INFRARED RADIATION, LIGHT, ELECTROMAGNETIC RADIATION OF SHORTER WAVELENGTH OR CORPUSCULAR RADIATION
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y10S: TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

## Abstract

The present invention provides a photoelectric conversion material comprising a fullerene derivative represented by the formula C60(R1)5(R2), wherein each R1 independently represents an organic group having a substituent; and R2 represents a hydrogen atom or a substituted or unsubstituted C1-C30 hydrocarbon group. Further, the present invention also provides a photoelectric conversion device having a self-assembled monomolecular film of the photoelectric conversion material, and a solar cell having the photoelectric conversion device.

## Claims

### Claim 1

A photoelectric conversion material of a self-assembled monomolecular film comprising a support and a compound having the following formula (10):
wherein:
R2 represents a hydrogen atom or a substituted or unsubstituted C1-C30 hydrocarbon group; and each R3 is independently a group represented by the following formula (A):
wherein:
X1 represents a phosphate group or a phosphonate group; each R20 independently represents an organic group; and n is an integer from 0 to 4.

### Claim 2 (depends on 1)

The photoelectric conversion material according to claim 1, wherein X1 represents a phosphate group.

### Claim 3 (depends on 1)

The photoelectric conversion material according to claim 1, wherein X1 represents a phosphonate group.

### Claim 4 (depends on 1)

The photoelectric conversion material according to claim 1, wherein the support is a conductive substance.

### Claim 5 (depends on 4)

The photoelectric conversion material according to claim 4, wherein the conductive substance is a metal, a metal oxide, or carbon.

### Claim 6 (depends on 5)

The photoelectric conversion material according to claim 5, wherein the metal is selected from the group consisting of platinum, gold, silver, copper, aluminum, rhodium and indium.

### Claim 7 (depends on 5)

The photoelectric conversion material according to claim 5, wherein the metal oxide is selected from the group consisting of an indium-tin composite oxide and a tin oxide doped with fluorine.

### Claim 8 (depends on 1)

A photoelectric conversion device having a self-assembled monomolecular film of the photoelectric conversion material according to claim 1.

### Claim 9 (depends on 1)

A photoelectric conversion device having an ITO electrode on which the self-assembled monomolecular film of the photoelectric conversion material according to claim 1 is formed.

### Claim 10 (depends on 9)

A solar cell having the photoelectric conversion device according to claim 9.