Organic material and photoelectric conversion element

Patent metadata

Field	Value
Publication number	US-10062854-B2
Application number	US-201715596423-A
Country	US
Kind code	B2
Filing date	May 16, 2017
Priority date	May 20, 2016
Publication date	Aug 28, 2018
Grant date	Aug 28, 2018

Abstract

To provide an organic material represented by General Formula (1) below:

where, in General Formula (1), R 1 and R 2 are each independently an alkyl group having from 2 through 8 carbon atoms, R 3 and R 4 are each independently a straight-chain alkyl group having 1, 2, 4, 6, or 12 carbon atoms, or a hydrogen atom, and n is an integer of 1 or 2.

First claim

What is claimed is:

1. An organic material represented by General Formula (1) below:

where, in General Formula (1), R 1 and R 2 are each independently an alkyl group having from 2 through 8 carbon atoms, R 3 and R 4 are each independently a straight-chain alkyl group having 1, 2, 4, 6, or 12 carbon atoms, or a hydrogen atom, and n is an integer of 1 or 2.

2. The organic material according to claim 1 ,
wherein the organic material is represented by General Formula (2) below:

where, in General Formula (2), R 1 and R 2 are each independently an alkyl group having from 2 through 8 carbon atoms, and R 3 and R 4 are each independently a straight-chain alkyl group having 1, 2, 4, 6, or 12 carbon atoms, or a hydrogen atom.

3. The organic material according to claim 1 ,
wherein the organic material is represented by General Formula (3) below:

where, in General Formula (3), R 1 and R 2 are each independently an alkyl group having from 2 through 8 carbon atoms, and R 3 and R 4 are each independently a straight-chain alkyl group having 1, 2, 4, 6, or 12 carbon atoms, or a hydrogen atom.

4. A photoelectric conversion element comprising:
a substrate;
a first electrode;
an electron-transporting layer;
a photoelectric conversion layer;
a hole-transporting layer; and
a second electrode, where the first electrode, the electron-transporting layer, the photoelectric conversion layer, the hole-transporting layer, and the second electrode are disposed on the substrate,
wherein the photoelectric conversion layer includes an organic material represented by General Formula (1) below, and an n-type semiconductor material,

where, in General Formula (1), R 1 and R 2 are each independently an alkyl group having from 2 through 8 carbon atoms, R 3 and R 4 are each independently a straight-chain alkyl group having 1, 2, 4, 6, or 12 carbon atoms, or a hydrogen atom, and n is an integer of 1 or 2.

5. The photoelectric conversion element according to claim 4 , wherein the n-type semiconductor material included in the photoelectric conversion layer is a fullerene derivative, and wherein the fullerene derivative is a compound represented by General Formula (4) below:

where, in General Formula (4), Y 1 and Y 2 are each independently a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an aryl group, or an aralkyl group with the proviso that both Y 1 and Y 2 are not hydrogen atoms at the same time, Ar is an aryl group, and in General Formula (4), a site represented by:

is a fullerene skeleton having 60 carbon atoms.

6. The photoelectric conversion element according to claim 4 , wherein the n-type semiconductor material included in the photoelectric conversion layer is a fullerene derivative, and
wherein the fullerene derivative is a compound represented by General Formula (5) below:

where, in General Formula (5), Z is a phenyl group, a 1-naphthyl group, or a 2-naphthyl group.

7. The photoelectric conversion element according to claim 4 , wherein the electron-transporting layer includes a first layer including metal oxide, and a second layer disposed between the first layer and the photoelectric conversion layer, the second layer including an amine compound represented by General Formula (6) below:

where, in General Formula (6), R 5 and R 6 are each independently an alkyl group having from 1 through 4 carbon atoms, where R 5 and R 6 may be bonded to each other to form a ring, X is a bivalent aromatic group having is from 6 through 14 carbon atoms or an alkylene group having from 1 through 4 carbon atoms, and A is any one of substituents below:
—COOH

—P(═O)(OH) 2

—Si(OH) 3 .

Assignees

• Arai Ryota
• Yasuda Takuma
• Shin woong
• Komiyama Hideaki
• Hidaka Yu
• To Takahiro
• Furukawa Seiichi
• Ricoh Co Ltd
• Univ Kyushu Nat Univ Corp

Inventors

• Arai Ryota
• Yasuda Takuma
• Shin woong
• Komiyama Hideaki
• Hidaka Yu
• To Takahiro
• Furukawa Seiichi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01L51/0074 Primary

  Electricity · mapped topic

• H01L51/42

  Electricity · mapped topic

• H01L51/0047

  Electricity · mapped topic

• H01L51/0068

  Electricity · mapped topic