# US 2021/0280809 A1 · Photoelectric conversion element and photoelectric conversion module

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- Number: US 2021/0280809 A1
- Document ID: US20210280809A1
- Status: Published application
- Kind: A1
- Application number: 17/184,695
- Filed: 2021-02-25
- Published: 2021-09-09
- Earliest claimed: 2020-02-27
- Assignees: Ricoh Company, Ltd.
- Applicants: Ricoh Company, Ltd.
- Inventors: Naomichi KANEI; Nozomu TAMOTO; Yuuji TANAKA; Tamotsu HORIUCHI
- Web page: https://patentgrep.com/patent/US20210280809A1

## CPC

- H10K 39/10: Organic photovoltaic [PV] modules; Arrays of single organic PV cells
- H10K 30/81: Electrodes
- H10K 30/82: Transparent electrodes, e.g. indium tin oxide [ITO] electrodes
- H10K 39/12: Electrical configurations of PV cells, e.g. series connections or parallel connections
- H10K 85/50: Organic perovskites; Hybrid organic-inorganic perovskites [HOIP], e.g. CH3NH3PbI3
- H10K 30/151: {the wide bandgap semiconductor comprising titanium oxide, e.g. TiO2}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A photoelectric conversion element including: a first electrode; a hole blocking layer; a photoelectric conversion layer; a second electrode; a third electrode; a photoelectric conversion part in which the first electrode, the hole blocking layer, the photoelectric conversion layer, and the second electrode are stacked; an electrode contact part in which the second electrode is in contact with the third electrode; and a division part dividing the photoelectric conversion part and the electrode contact part, wherein an area (S1) where the second electrode is in contact with the third electrode in the electrode contact part and an area (S2) of the photoelectric conversion part satisfy expression (1) below: 1.0×10−5≤100×(S1/S2) . . . expression (1).

## Claims

### Claim 1

A photoelectric conversion element comprising:
a first electrode;
a hole blocking layer;
a photoelectric conversion layer;
a second electrode;
a third electrode;
a photoelectric conversion part in which the first electrode, the hole blocking layer, the photoelectric conversion layer, and the second electrode are stacked;
an electrode contact part in which the second electrode is in contact with the third electrode; and
a division part dividing the photoelectric conversion part and the electrode contact part,
wherein an area (S1) where the second electrode is in contact with the third electrode in the electrode contact part and an area (S2) of the photoelectric conversion part satisfy expression (1) below:
1.0×10−5≤100×(S1/S2) expression (1).

### Claim 2 (depends on 1)

The photoelectric conversion element according to claim 1,
wherein the area (S1) and the area (S2) satisfy expression (1-1) below:
1.0×10−4≤100×(S1/S2) expression (1-1).

### Claim 3 (depends on 1)

The photoelectric conversion element according to claim 1,
wherein the photoelectric conversion layer extends in the electrode contact part via the division part, and
in the electrode contact part, the second electrode penetrates the photoelectric conversion layer extending in the electrode contact part to be in contact with the third electrode.

### Claim 4 (depends on 1)

The photoelectric conversion element according to claim 1,
wherein the photoelectric conversion layer includes an electron-transporting layer and a hole-transporting layer, and
a width from an edge of a side of the photoelectric conversion part through an edge of a side of the electrode contact part in the division part is 100 times or more as large as an average thickness of the electron-transporting layer.

### Claim 5 (depends on 1)

A photoelectric conversion module including a plurality of photoelectric conversion elements each of which is the photoelectric conversion element according to claim 1,
wherein, in a first photoelectric conversion element and a second photoelectric conversion element that are adjacent to each other among the plurality of photoelectric conversion elements, the third electrode of the first photoelectric conversion element is electrically coupled to the first electrode of the second photoelectric conversion element.

### Claim 6 (depends on 5)

The photoelectric conversion module according to claim 5,
wherein the third electrode of the first photoelectric conversion element is integrated with the first electrode of the second photoelectric conversion element.

### Claim 7 (depends on 5)

The photoelectric conversion module according to claim 5,
wherein, between the photoelectric conversion elements adjacent to each other, electron-transporting layers are not extended to each other, hole-transporting layers are not extended to each other, or the electron-transporting layers are not extended to each other and the hole-transporting layers are not extended to each other.

### Claim 8 (depends on 5)

The photoelectric conversion module according to claim 5,
wherein, between the photoelectric conversion elements adjacent to each other, photoelectric conversion layers are not extended to each other.