Photoelectric conversion element and solar cell

Patent metadata

Field	Value
Publication number	US-9640330-B2
Application number	US-201414895772-A
Country	US
Kind code	B2
Filing date	Jun 5, 2014
Priority date	Jun 6, 2013
Publication date	May 2, 2017
Grant date	May 2, 2017

Abstract

A photoelectric conversion element, including: an electron transporting material; and a porphyrin compound represented by General Formula (1) or (2), wherein the electron transporting material is coated with the porphyrin compound:

where R 1 and R 2 each independently denote an aromatic hydrocarbon group which has 6-20 carbon atoms and may have an alkyl or alkoxy group as substituent, R 1 and R 2 may be bonded to form ring structure A1, X denotes a monovalent group expressed by Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl or alkoxy group as a substituent,

where R denotes an aromatic hydrocarbon group which has 6-20 carbon atoms and may have an alkyl or alkoxy group as substituent, X denotes a monovalent group expressed by Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl or alkoxy group as substituent,

First claim

The invention claimed is:

1. A photoelectric conversion element, comprising:
an electron transporting material; and
a porphyrin compound represented by the following General Formula (1) or the following General Formula (2),
wherein the electron transporting material is coated with the porphyrin compound:

where in General Formula (1), R 1 and R 2 each independently denote an aromatic hydrocarbon group which has 6 to 20 carbon atoms and may have an alkyl group or an alkoxy group as a substituent, R 1 and R 2 may be bonded together to form a ring structure denoted by A1, X denotes a monovalent group expressed by the following Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl group or an alkoxy group as a substituent,

where in General Formula (2), R denotes an aromatic hydrocarbon group which has 6 to 20 carbon atoms and may have an alkyl group or an alkoxy group as a substituent, X denotes a monovalent group expressed by the following Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl group or an alkoxy group as a substituent,

2. The photoelectric conversion element according to claim 1 , wherein the porphyrin compound represented by the General Formula (1) is represented by the following General Formula (1-1):

where in the General Formula (1-1), R 1 , R 2 , A1, and X are as defined in the General Formula (1).

3. The photoelectric conversion element according to claim 1 , wherein the porphyrin compound represented by the General Formula (2) is represented by the following General Formula (2-1):

where in the General Formula (2-1), R and X are as defined in the General Formula (2).

4. The photoelectric conversion element according to claim 1 , wherein the electron transporting material is an n-type oxide semiconductor of nanoparticles.

5. The photoelectric conversion element according to claim 4 , wherein the n-type oxide semiconductor of nanoparticles is titanium oxide, zinc oxide, tin oxide, niobium oxide, or any combination thereof.

6. The photoelectric conversion element according to claim 1 , wherein the electron transporting material is coated with the porphyrin compound in a supercritical carbon dioxide fluid.

7. The photoelectric conversion element according to claim 6 , wherein a pressure of the supercritical carbon dioxide fluid is 15 MPa to 45 MPa, and a temperature of the supercritical carbon dioxide fluid is 35° C. to 60° C.

8. A solar cell, comprising:
a first electrode;
an electron transporting layer on the first electrode; and
a second electrode facing the electron transporting layer,
wherein the electron transporting layer comprises a photoelectric conversion element,
wherein the photoelectric conversion element comprises:
an electron transporting material; and
a porphyrin compound represented by the following General Formula (1) or the following General Formula (2),
wherein the electron transporting material is coated with the porphyrin compound:

where in General Formula (1), R 1 and R 2 each independently denote an aromatic hydrocarbon group which has 6 to 20 carbon atoms and may have an alkyl group or an alkoxy group as a substituent, R 1 and R 2 may be bonded together to form a ring structure denoted by A1, X denotes a monovalent group expressed by the following Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl group or an alkoxy group as a substituent,

where in General Formula (2), R denotes an aromatic hydrocarbon group which has 6 to 20 carbon atoms and may have an alkyl group or an alkoxy group as a substituent, X denotes a monovalent group expressed by the following Structural Formula (I), (II) or (III), and Y denotes a phenyl group which may have an alkyl group or an alkoxy group as a substituent,

Assignees

• Tanaka Yuuji
• Horiuchi Tamotsu
• Ricoh Co Ltd

Inventors

• Tanaka Yuuji
• Horiuchi Tamotsu

Classifications

• H01G9/2059 Primary

  comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution · CPC title

• H01L51/0092

  Electricity · mapped topic

• H01G9/2031

  comprising titanium oxide, e.g. TiO2 (H01G9/2036 takes precedence) · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• Y02E10/542

  Dye sensitized solar cells · CPC title