# US 10,761,222 B2 · Detection element and detector

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- Number: US 10,761,222 B2
- Document ID: US10761222B2
- Status: Granted
- Kind: B2
- Application number: 16/121,754
- Filed: 2018-09-05
- Published: 2019-08-29
- Granted: 2020-09-01
- Earliest claimed: 2018-02-23
- Assignees: Kabushiki Kaisha Toshiba
- Applicants: Kabushiki Kaisha Toshiba
- Inventors: Kohei Nakayama; Fumihiko Aiga; Go Kawata; Isao Takasu; Yuko Nomura; Satomi Taguchi; Hyangmi Jung; Atsushi Wada; Rei Hasegawa
- Web page: https://patentgrep.com/patent/US10761222B2

## CPC

- H10K 30/57: comprising multiple junctions, e.g. tandem PV cells
- G01T 1/241: {Electrode arrangements, e.g. continuous or parallel strips or the like}
- H10K 30/81: Electrodes
- H10K 30/821: {comprising carbon nanotubes}
- G01T 1/242: {Stacked detectors, e.g. for depth information (constructional or manufacturing details H10W90/00)}
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- G01T: MEASUREMENT OF NUCLEAR OR X-RADIATION (radiation analysis of materials, mass spectrometry G01N23/00; tubes for determining the presence, intensity, density or energy of radiation or particles H01J47/00)
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

According to an embodiment, a detection element includes a first electrode, a second electrode, an organic conversion layer, and a third electrode. A bias is applied to the first electrode. The organic conversion layer is arranged between the first electrode and the second electrode, and is configured to convert energy of a radiation into an electric charge. The third electrode is arranged in the organic conversion layer.

## Claims

### Claim 1

A detection element comprising:
a first electrode to which a bias is applied;
a second electrode;
an organic conversion layer that is arranged between the first electrode and the second electrode, and is configured to convert energy of a radiation into an electric charge; and
a third electrode arranged in the organic conversion layer, the third electrode being formed in a sheet-like shape arranged in a direction orthogonal to a thickness direction of the organic conversion layer, wherein
a first distance between the first electrode and the third electrode is smaller than a second distance between the second electrode and the third electrode, and
a first potential difference between the first electrode and the third electrode is larger than a second potential difference between the second electrode and the third electrode.

### Claim 2 (depends on 1)

The element according to claim 1,
wherein the third electrode has a through hole extending in a thickness direction of the organic conversion layer.

### Claim 3 (depends on 1)

The element according to claim 1, wherein the third electrode is formed from a conductive carbon material.

### Claim 4 (depends on 1)

The element according to claim 1, further comprising
one or more fourth electrodes arranged between the second electrode and the third electrode in the organic conversion layer.

### Claim 5 (depends on 4)

The element according to claim 4, wherein the one or more fourth electrodes include a plurality of fourth electrodes, and positions of the plurality of fourth electrodes in the thickness direction of the organic conversion layer are different from each other.

### Claim 6 (depends on 5)

The element according to claim 5, wherein the one or more fourth electrodes include a plurality of fourth electrodes, and a first potential difference between the first electrode and the third electrode is larger than a third potential difference between the second electrode and a fourth electrode adjacent to the second electrode, a fourth potential difference between the plurality of fourth electrodes, and a fifth potential difference between the third electrode and a fourth electrode adjacent to the third electrode.

### Claim 7 (depends on 1)

A detector comprising:
the detection element according to claim 1;
a voltage application unit configured to apply the bias to the first electrode; and
a detection unit configured to detect an output signal output from the first electrode.

### Claim 8 (depends on 7)

The detector according to claim 7,
wherein the third electrode has a through hole extending in a thickness direction of the organic conversion layer.

### Claim 9 (depends on 1)

The element according to claim 1, wherein
an organic material used for the organic conversion layer is at least one of a derivative of polyphenylene vinylene or polythiophene-based polymeric material.

### Claim 10 (depends on 1)

The element according to claim 1, wherein
the radiation is at least one of a β-ray, an α-ray, or a neutron ray.

### Claim 11 (depends on 4)

The element according to claim 4, wherein
the one or more fourth electrodes are formed in a sheet-like shape arranged in a direction orthogonal to a thickness direction of the organic conversion layer.