Organic photoelectric conversion element, two-dimensional sensor, image sensor, and imaging apparatus

Patent metadata

Field	Value
Publication number	US-2019013469-A1
Application number	US-201816114686-A
Country	US
Kind code	A1
Filing date	Aug 28, 2018
Priority date	Mar 3, 2016
Publication date	Jan 10, 2019
Grant date	—

Abstract

Provided is an organic photoelectric conversion element including: an electron-collecting electrode; a hole-collecting electrode; and a photoelectric converter, which is arranged between the electron-collecting electrode and the hole-collecting electrode, wherein the photoelectric converter includes at least a first organic compound layer, and wherein the first organic compound layer contains a compound represented by the following general formula [1].

First claim

What is claimed is:

1 . An organic photoelectric conversion element comprising:
an electron-collecting electrode; a hole-collecting electrode; and a photoelectric converter, which is arranged between the electron-collecting electrode and the hole-collecting electrode, wherein the photoelectric converter includes at least a first organic compound layer, and wherein the first organic compound layer contains a compound represented by the following general formula [1]:

in the formula [1]:
Ar 1 and Ar 2 each represent an alkyl group having 1 to 8 carbon atoms, an aromatic hydrocarbon group having 6 to 18 carbon atoms, or a heteroaromatic ring group having 3 to 15 carbon atoms, Ar 1 and Ar 2 may each further have a substituent selected from a halogen atom, a cyano group, an alkyl group having 1 to 6 carbon atoms, a phenyl group, a tolyl group, a xylyl group, a mesityl group, and a cumenyl group, and when Ar 1 and Ar 2 each represent an aromatic hydrocarbon group having 6 to 18 carbon atoms or a heteroaromatic ring group having 3 to 15 carbon atoms, Ar 1 and Ar 2 may be bonded to each other via any one of a single bond, and a methylene group and an ethylene group each of which may have an alkyl group to form a ring structure;
Ar 3 represents a fused polycyclic aromatic hydrocarbon group formed by fusion of 4 or 5 six-membered rings, excluding an acene group, Ar 3 may further have a fluorine atom, a cyano group, a methyl group, or a tert-butyl group, and when Ar 2 represents an aromatic hydrocarbon group having 6 to 18 carbon atoms or a heteroaromatic ring group having 3 to 15 carbon atoms, Ar 2 and Ar 3 may be bonded to each other via any one of a single bond, and a methylene group and an ethylene group each of which may have an alkyl group to form a ring structure; and
Q represents a substituent selected from a group of substituents represented by the following general formulae [2a] to [2e]:

in the formulae [2a] to [2e], R 1 to R 27 each represents a substituent selected from a hydrogen atom, a fluorine atom, an alkyl group having 1 to 4 carbon atoms, or a cyano group, and * represents a bonding site with Ar 3 .

2 . The organic photoelectric conversion element according to claim 1 , wherein the Ar 3 represents a pyrenediyl group, a benzopyrenediyl group, a triphenylenediyl group, a perylenediyl group, or a chrysenediyl group.

3 . The organic photoelectric conversion element according to claim 1 , wherein, in at least one of the Ar 1 and the Ar 2 , the aromatic hydrocarbon group comprises a phenyl group or a naphthyl group, and the heteroaromatic ring group comprises a pyridyl group, a benzothienyl group, or a benzofuranyl group.

4 . The organic photoelectric conversion element according to claim 1 , wherein the Q represents a substituent selected from the formulae [2a] to [2c].

5 . The organic photoelectric conversion element according to claim 1 , wherein the first organic compound layer further contains a fullerene derivative.

6 . The organic photoelectric conversion element according to claim 1 , further comprising a second organic compound layer, which is arranged between the hole-collecting electrode and the photoelectric converter.

7 . The organic photoelectric conversion element according to claim 1 , further comprising a third organic compound layer, which is arranged between the electron-collecting electrode and the photoelectric converter.

8 . A light area sensor comprising a plurality of the organic photoelectric conversion elements of claim 1 , wherein the plurality of the organic photoelectric conversion elements are two-dimensionally arranged in an in-plane direction.

9 . An organic photoelectric conversion apparatus comprising a plurality of kinds of organic photoelectric conversion elements configured to receive light beams having different wavelengths,
wherein at least one kind of organic photoelectric conversion element of the plurality of kinds of organic photoelectric conversion elements comprises the organic photoelectric conversion element of claim 1 , and wherein the plurality of kinds of organic photoelectric conversion elements are laminated.

10 . A light area sensor comprising a plurality of the organic photoelectric conversion apparatus of claim 9 , wherein the plurality of the photoelectric conversion apparatus are two-dimensionally arranged in an in-plane direction.

11 . An imaging element, which is the light area sensor of claim 10 , comprising:
a plurality of organic photoelectric conversion elements; and a transistor connected to each of the plurality of organic photoelectric conversion elements, wherein at least one of the plurality of organic photoelectric conversion elements comprises the organic photoelectric conversion element of claim 1 , and wherein the plurality of organic photoelectric conversion elements each serve as a light-receiving pixel.

12 . The imaging element according to claim 11 , further comprising one of a color filter and an optical filter, which corresponds to the light-receiving pixel.

13 . The imaging element according to claim 12 , wherein the imaging element comprises the optical filter, and the optical filter comprises any one of a low-pass filter configured to transmit light having a wavelength equal to or longer than an infrared wavelength and a long-pass filter configured to transmit light having a wavelength equal to or shorter than an ultraviolet wavelength.

14 . The imaging element according to claim 11 , further comprising an optical member, which is arranged so as to correspond to each of a plurality of the light-receiving pixels.

15 . An imaging apparatus comprising:
an imaging optical system; and an imaging element configured to receive light that has passed the imaging optical system, wherein the imaging element comprises the imaging element of claim 11 .

16 . An imaging apparatus comprising:
a joining portion capable of being joined to an imaging optical system; and the imaging element of claim 10 .

17 . The imaging apparatus according to claim 15 , wherein the imaging apparatus comprises one of a digital camera and a digital still camera.

18 . The imaging apparatus according to claim 15 , further comprising a receiving unit configured to receive a signal from an outside, wherein the signal comprises a signal configured to control at least one of an imaging range of the imaging apparatus, a start of imaging thereof, and an end of the imaging.

19 . The imaging apparatus according to claim 15 , further comprising a transmitting unit configured to transmit an acquired image to an outside.

Assignees

• Canon Kk

Inventors

• Miyashita Hirokazu
• Nishide Yosuke
• Yamada Naoki
• Kamatani Jun

Classifications

• Y02E10/549

  Organic PV cells · CPC title

• C07C2602/08

  the other ring being five-membered, e.g. indane · CPC title

• C07C255/42

  the carbon skeleton being further substituted by singly-bound nitrogen atoms, not being further bound to other hetero atoms · CPC title

• H04N25/79

  Arrangements of circuitry being divided between different or multiple substrates, chips or circuit boards, e.g. stacked image sensors · CPC title

• H01L51/0054

  Electricity · mapped topic