Tertiary amine compound, photoelectric conversion element, and solar cell

Patent metadata

Field	Value
Publication number	US-10651390-B2
Application number	US-201715617070-A
Country	US
Kind code	B2
Filing date	Jun 8, 2017
Priority date	Jun 8, 2016
Publication date	May 12, 2020
Grant date	May 12, 2020

Abstract

A tertiary amine compound is provided. The tertiary amine compound is represented by the following general formula (1):

where each of Ar 1 and Ar 2 independently represents a benzene ring having an alkyl group or an alkoxy group, an unsubstituted benzene ring, a naphthalene ring having an alkyl group or an alkoxy group, or an unsubstituted naphthalene ring.

First claim

The invention claimed is:

1. A photoelectric conversion element comprising:
a first electrode;
a hole blocking layer;
an electron transport layer;
a hole transport layer; and
a second electrode,
wherein the hole transport layer comprises a tertiary amine compound represented by formula (1):

where each of Ar 1 and Ar 2 independently represents a benzene ring having an alkyl group or an alkoxy group, an unsubstituted benzene ring, a naphthalene ring having an alkyl group or an alkoxy group, or an unsubstituted naphthalene ring.

2. The photoelectric conversion element of claim 1 , wherein the hole transport layer contains a hole transport material represented by formula (2):

where R 1 represents a hydrogen atom or methyl group.

3. The photoelectric conversion element of claim 1 , wherein the electron transport layer contains titanium oxide.

4. The photoelectric conversion element of claim 1 , wherein the hole blocking layer contains titanium oxide.

5. The photoelectric conversion element of claim 1 further comprising:
a transparent conductive film substrate;
an organic-inorganic perovskite compound layer,
wherein
the first electrode overlays the transparent conductive film substrate,
the hole blocking layer overlays the first electrode,
the electron transport layer overlays the hole blocking layer,
the organic-inorganic perovskite compound layer overlays the electron transport layer,
the hole transport layer overlays the organic-inorganic perovskite compound layer, and
the second electrode overlays the hole transport layer.

6. The photoelectric conversion element of claim 5 , wherein the organic-inorganic perovskite compound layer contains an organic-inorganic perovskite compound represented by formula (a):
X α Y β M γ   Formula (a)

where X represents a halogen atom; Y represents at least one of an alkylammonium, formamidinium, and cesium, excluding the case where Y represents cesium only; M represents at least one of lead and tin; and the ratio α/β/γ is 3/1/1.

7. The photoelectric conversion element of claim 6 , wherein the alkylammonium includes methylammonium.

8. A solar cell comprising the photoelectric conversion element of claim 1 .

9. A solar cell comprising the photoelectric conversion element of claim 5 .

Assignees

• Ricoh Co Ltd

Inventors

• Matsuyama Tsuyoshi
• Tanaka Yuuji
• Arai Ryota
• Kino Tokushige
• Kanei Naomichi
• Horiuchi Tamotsu

Classifications

• Y02E10/542

  Dye sensitized solar cells · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/0086

  Electricity · mapped topic

• H01L51/0032

  Electricity · mapped topic

• C07D213/38 Primary

  having only hydrogen or hydrocarbon radicals attached to the substituent nitrogen atom · CPC title