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Organic photoelectric conversion element, optical area sensor, imaging device, and imaging device

A technology for organic photoelectric conversion and imaging devices, which is used in electrical components, electric solid-state devices, photovoltaic power generation, etc.

Active Publication Date: 2020-08-11
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the organic photoelectric conversion element has room for improvement

Method used

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  • Organic photoelectric conversion element, optical area sensor, imaging device, and imaging device
  • Organic photoelectric conversion element, optical area sensor, imaging device, and imaging device
  • Organic photoelectric conversion element, optical area sensor, imaging device, and imaging device

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Embodiment approach

[0017] figure 1 is a schematic cross-sectional view of an organic photoelectric conversion element according to an embodiment of the present invention. This organic photoelectric conversion element includes a first organic compound layer 1 between a cathode 4 and an anode 5 . The first organic compound layer 1 functions as a photoelectric conversion portion that converts light into charges. Since the first organic compound layer is intended to convert light into charges, it may be referred to as a photoelectric conversion layer.

[0018] The organic photoelectric conversion element further includes a second organic compound layer 2 between the first organic compound layer and the cathode, and a third organic compound layer 3 between the first organic compound layer and the anode.

[0019] The anode 5 is connected to a readout circuit 6 . The readout circuit 6 reads information according to the charges generated by the organic conversion section and transmits the information...

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Abstract

An organic photoelectric conversion element includes an anode, a cathode, and a photoelectric conversion portion between the anode and the cathode. The photoelectric conversion portion includes a first organic compound layer containing an organic compound. Also, a second organic compound layer is provided between the cathode and the photoelectric conversion portion. The second organic compound layer contains an organic compound having an ionization potential of 5.1 eV or less and a band gap of 2.5 eV or more.

Description

technical field [0001] The present invention relates to an organic photoelectric conversion element, an optical area sensor, an imaging device, and an imaging device. Background technique [0002] Two-dimensional light receiving devices are widely used as imaging devices. Such an imaging device includes pixels defined by photoelectric conversion portions arranged two-dimensionally in a semiconductor, and signals generated in the pixels by photoelectric conversion are transferred as charges and read out by a CCD circuit or a CMOS circuit. [0003] A photodiode is known which includes a photoelectric conversion portion containing an organic compound. [0004] PTL 1 discloses a highly sensitive, fast-response organic photoelectric conversion element having a high S / N ratio of photocurrent to dark current. The organic photoelectric conversion element includes a hole blocking layer containing a fullerene derivative and an organic compound having an ionization potential of 5.5 e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L27/146H01L51/42H10K99/00
CPCY02E10/549H01L27/14605H01L27/14647H10K39/32H10K85/211H10K85/60H10K85/654H10K85/6572H10K30/20H10K85/324H10K85/631H10K30/211
Inventor 镰谷淳山田直树板桥真澄西出洋祐宫下广和小菅哲弥盐原悟高桥哲生妹尾章弘伊藤健太郎太田俊
Owner CANON KK