Photoelectric conversion element and solar cell

Patent metadata

Field	Value
Publication number	US-2016141111-A1
Application number	US-201615001984-A
Country	US
Kind code	A1
Filing date	Jan 20, 2016
Priority date	Jul 31, 2013
Publication date	May 19, 2016
Grant date	—

Abstract

A photoelectric conversion element includes a first electrode which has a photosensitive layer containing a light absorber on a conductive support, a second electrode which is opposed to the first electrode, and a hole transport layer which is provided between the first electrode and the second electrode, and the light absorber contains at least one of compound (P) having a perovskite crystal structure represented by the following Formula (I). A solar cell includes this photoelectric conversion element.
A a (M A1 (1-n) M A2 n ) mA X x   Formula (I):

First claim

What is claimed is:

1 . A photoelectric conversion element comprising:
a first electrode which has a photosensitive layer containing a light absorber on a conductive support; a second electrode which is opposed to the first electrode; and a hole transport layer which is provided between the first electrode and the second electrode, wherein the light absorber contains at least one of compound (P) having a perovskite crystal structure represented by the following Formula (I),
A a (M A1 (1-n) M A2 n ) mA X x   Formula (I):

wherein A represents a cationic group represented by the following Formula (A), M A1 and M A2 represent metal atoms different from each other, n represents a number satisfying 0≦n≦0.5, X represents an anionic atom, a represents 1 or 2, mA represents 1, and a, mA, and x satisfy a+2 mA=x,
R A —NH 3   Formula (A):

wherein R A represents an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group, or a group represented by the following Formula (1), which may have a substituent, and the alkyl group has a substituent when n represents a number satisfying 0≦n<0.01, and

wherein X a represents NR 1c , an oxygen atom, or a sulfur atom, each of R 1b and R 1c independently represents a hydrogen atom or a substituent, and * represents a bonding position with the N atom of Formula (A).

2 . The photoelectric conversion element according to claim 1 ,
wherein the compound (P) having a perovskite crystal structure includes a compound (P A ) represented by the following Formula (IA),
A(M A1 (1-n) M A2 n )X 3   Formula (IA):

wherein A, M A1 , M A2 , n, and X are synonymous with A, M A1 , M A2 , n, and X of Formula (I).

3 . The photoelectric conversion element according to claim 1 ,
wherein the compound (P) having a perovskite crystal structure includes a compound (P B ) represented by the following Formula (TB),
A 2 (M A1 (1-n) M A2 n )X 4   Formula (IB):

wherein A, M A1 , M A2 , n, and X are synonymous with A, M A1 , M A2 , n, and X of Formula (I).

4 . The photoelectric conversion element according to claim 1 ,
wherein when n represents a number satisfying 0.01≦n≦0.5, A is a cationic group represented by the following Formula (A1),
R A1 —NH 3   Formula (A1):

wherein R A1 represents an unsubstituted alkyl group.

5 . The photoelectric conversion element according to claim 1 ,
wherein A is a cationic group represented by the following Formula (A2),
R A2 —NH 3   Formula (A2):

wherein R A2 represents an alkyl group having a substituent, or a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, a heteroaryl group, or a group represented by Formula (1), which may have a substituent.

6 . The photoelectric conversion element according to claim 1 ,
wherein n represents a number satisfying 0.05≦n≦0.20.

7 . The photoelectric conversion element according to claim 1 ,
wherein one of M A1 and M A2 is a Pb atom and the other is a Sn atom.

8 . The photoelectric conversion element according to claim 1 ,
wherein M A1 is a Pb atom and M A2 is a Sn atom.

9 . The photoelectric conversion element according to claim 1 ,
wherein X is a halogen atom.

10 . The photoelectric conversion element according to claim 1 ,
wherein when a is 1, X is represented by the following Formula (X1),
X A1 (3-m1) X A2 m1   Formula (X1):

wherein X A1 and X A2 represent anionic atoms different from each other, and m1 represents a number of 0.01 to 2.99.

11 . The photoelectric conversion element according to claim 1 ,
wherein when a is 2, X is represented by the following Formula (X2),
X A1 (4-m2) X A2 m2   Formula (X2):

wherein X A1 and X A2 represent anionic atoms different from each other, and m2 represents a number of 0.01 to 3.99.

12 . The photoelectric conversion element according to claim 10 ,
wherein X A1 and X A2 are halogen atoms different from each other.

13 . The photoelectric conversion element according to claim 11 ,
wherein X A1 and X A2 are halogen atoms different from each other.

14 . The photoelectric conversion element according to claim 1 ,
wherein the substituent has at least one selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an alkylthio group, a mercapto group, an aryloxy group, an amino group, a carboxy group, an acyl group, an alkoxycarbonyl group, an aryloxycarbonyl group, an alkyl carbonyloxy group, an aryl carbonyloxy group, a halogen atom, a cyano group, an aryl group, and a heteroaryl group.

15 . The photoelectric conversion element according to claim 1 ,
wherein the substituent is a halogen atom.

16 . The photoelectric conversion element according to claim 1 ,
wherein the substituent is an alkyl group substituted with a halogen atom.

17 . The photoelectric conversion element according to claim 2 ,
wherein the substituent is an alkyl group substituted with a halogen atom.

18 . The photoelectric conversion element according to claim 3 ,
wherein the substituent is an alkyl group substituted with a halogen atom.

19 . The photoelectric conversion element according to claim 6 ,
wherein the substituent is an alkyl group substituted with a halogen atom.

20 . A solar cell comprising:
the photoelectric conversion element according to claim 1 .

Assignees

• Fujifilm Corp

Inventors

• Sato Hirotaka
• Kobayashi Katsumi

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• H01G9/2004 Primary

  characterised by the electrolyte, e.g. comprising an organic electrolyte · CPC title

• H10K85/50

  Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3 · CPC title

• H10K30/152

  the wide bandgap semiconductor comprising zinc oxide, e.g. ZnO · CPC title

• H10K30/50

  Photovoltaic [PV] devices · CPC title