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Organic electroluminescent materials and devices

An electron-drawing-based, non-substituting technology, applied in the field of organic electroluminescent materials and devices, can solve problems affecting deposition control, production performance, reproducibility, device thermal stability, doping use, low evaporation temperature, etc., and achieve excellent applications Foreground, good potential effect

Active Publication Date: 2021-07-09
BEIJING SUMMER SPROUT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] However, deep LUMO materials are not easy to synthesize due to their strong electron-withdrawing substituents, and it is difficult to have deep LUMO, high stability and high film-forming properties at the same time.
For example, F4-TCNQ (P-type hole injection material), although it has a deep LUMO, but the evaporation temperature is too low, which affects the control of deposition, production performance reproducibility and device thermal stability; another example, HATCN because of crystallinity Strong, there is a film-forming problem in the device, and the LUMO is not deep enough to be used as a P-type dopant

Method used

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  • Organic electroluminescent materials and devices
  • Organic electroluminescent materials and devices
  • Organic electroluminescent materials and devices

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Embodiment Construction

[0038] OLEDs can be fabricated on various substrates such as glass, plastic and metal. figure 1 The organic light emitting device 100 is shown schematically and non-limitatively. The drawings are not necessarily drawn to scale, and some layer structures in the drawings can also be omitted as needed. Device 100 may include substrate 101 , anode 110 , hole injection layer 120 , hole transport layer 130 , electron blocking layer 140 , light emitting layer 150 , hole blocking layer 160 , electron transport layer 170 , electron injection layer 180 and cathode 190 . Device 100 may be fabricated by sequentially depositing the described layers. The properties and functions of the various layers and exemplary materials are described in more detail in US Patent No. 7,279,704 B2, columns 6-10, the entire contents of which are incorporated herein by reference.

[0039] Each of these layers has more instances. For example, flexible and transparent substrate-anode combinations are disclo...

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Abstract

Organic electroluminescent materials and devices are disclosed. The organic electroluminescent material is a series of novel compounds with dehydrobenzodiimidazole or dehydrobenzodipyrrole and a similar structure thereof, and can be used as a charge transport material, a charge injection material and a similar material in an electroluminescent device. The novel compounds have a deep LUMO energy level, and have better potential and excellent application prospects in the fields of charge transport materials, charge injection materials and the like. An electroluminescent device and a compound combination are also disclosed.

Description

technical field [0001] The present invention relates to compounds for use in organic electronic devices, such as organic light emitting devices. More particularly, it relates to a novel compound having dehydrobenzodiimidazole or dehydrobenzodipyrrole and a structure similar thereto, and an organic electroluminescence device and compound combination comprising the compound. Background technique [0002] Organic electronic devices include but are not limited to the following categories: organic light-emitting diodes (OLEDs), organic field-effect transistors (O-FETs), organic light-emitting transistors (OLETs), organic photovoltaic devices (OPVs), dye-sensitized solar cells (DSSCs) , organic optical detectors, organic photoreceptors, organic field-effect devices (OFQDs), light-emitting electrochemical cells (LECs), organic laser diodes, and organic plasmonic light-emitting devices. [0003] In 1987, Tang and Van Slyke of Eastman Kodak reported a double-layer organic electrolum...

Claims

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Application Information

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IPC IPC(8): C07D487/04C07D487/14C09K11/06H01L51/50H01L51/54H01L51/56
CPCC07D487/04C07D487/14C09K11/06C09K2211/1044C09K2211/1074H10K71/164H10K85/6572H10K50/17H10K50/15H10K85/611Y02E10/549
Inventor 丁华龙夏传军刘仁茂崔至皓邝志远
Owner BEIJING SUMMER SPROUT TECH CO LTD
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