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Organic near-infrared upconversion device with planar heterojunction as photosensitive layer

A technology of photosensitive layer and heterojunction, which is applied in the fields of electric solid-state devices, semiconductor devices, semiconductor/solid-state device manufacturing, etc.

Inactive Publication Date: 2017-08-08
LANZHOU UNIVERSITY
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  • Description
  • Claims
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Problems solved by technology

Organic near-infrared up-conversion devices with inverted OLED structures have not been reported so far

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  • Organic near-infrared upconversion device with planar heterojunction as photosensitive layer
  • Organic near-infrared upconversion device with planar heterojunction as photosensitive layer
  • Organic near-infrared upconversion device with planar heterojunction as photosensitive layer

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Embodiment Construction

[0016] The glass coated with indium tin oxide (ITO) transparent conductive film is used as the substrate, and it also serves as a transparent cathode; the lead phthalocyanine / fullerene (PbPc / C 60 ) donor-acceptor planar heterojunction as the near-infrared photosensitive layer, with 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline (BCP) as the electron transport layer, three ( 8-hydroxyquinoline) aluminum (Alq 3 ) is the light-emitting layer, and N,N`-biphenyl-N,N`-bis(1-naphthyl)-(1,1`-biphenyl)-4,4`-hydrazine (NPB) is the hole The transport layer is used to prepare organic near-infrared up-conversion devices of the first and second structures in the present invention. The preparation process is as follows:

[0017] a) Clean the ITO glass substrate with a standard process;

[0018] b) the cleaned ITO glass substrate was treated under a UV lamp for 10 minutes;

[0019] c) loading the substrate into a vacuum coating system with multiple thermal evaporation sources of organic ma...

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Abstract

The invention discloses an organic near-infrared upcoversion device with a planar heterojunction as a near-infrared photosensitive layer. The organic planar heterojunction is used as the near-infrared photosensitive layer. An organic light emitting diode (OLED) structure is used as a light emitting unit for preparing the organic near-infrared upcoversion device. The organic planar heterojunction has a donor-acceptor or acceptor-donor planar heterojunction structure. The OLED structure has a routine or inversed OLED structure. Four organic near-infrared upcoversion devices which respectively have a transparent cathode / donor-acceptor planar heterojunction photosensitive layer / inversed OLED functional layer / anode structure, a transparent cathode / reversed OLED functional layer / donor-acceptor planar heterojunction photosensitive layer / anode structure, a transparent anode / acceptor-donor planar heterojunction photosensitive layer / routine LED functional layer / cathode structure and a transparent anode / routine OLED functional layer / acceptor-donor planar heterojunction photosensitive layer / cathode structure are designed.

Description

[0001] 【Technical field】 [0002] The invention relates to an organic near-infrared up-conversion device with a planar heterojunction as a photosensitive layer, belonging to the technical field of solid electronic devices. [0003] 【Background technique】 [0004] Near-infrared (NIR) imaging devices have broad application prospects in night vision, security, semiconductor wafer inspection, and medical imaging. An important near-infrared light imaging method is to use a near-infrared up-conversion device to convert the incident near-infrared light into visible light, which can be observed directly with the naked eye or a camera. In recent years, NIR upconversion devices based on inorganic, hybrid organic / inorganic, and organic materials have been reported. Organic near-infrared up-conversion devices have the advantages of simple fabrication process, low fabrication cost and high performance. Organic near-infrared up-conversion devices can be realized simply by integrating an or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
CPCH10K85/00H10K50/80H10K50/00H10K71/00
Inventor 彭应全吕文理钟隽康许自强
Owner LANZHOU UNIVERSITY
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