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Organic light-emitting device and display device

An electroluminescent device and electroluminescent technology are applied in the fields of organic electroluminescent devices, display devices, and biindole materials, which can solve the problems of low utilization rate, high technical content and high energy consumption, and achieve the reduction of driving voltage, Improved luminous efficiency and good film-forming properties

Inactive Publication Date: 2018-12-14
赵东敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the shortcomings of this process are also obvious. On the one hand, the characteristics of the organic material itself determine that thermal evaporation at high temperature for a long time requires high thermal stability of the material; in addition, the long-term stable control of the evaporation rate, Maintaining the uniformity of material distribution on the substrate is also a very important requirement; and high vacuum, high temperature evaporation, high energy consumption; more importantly, because the production process of the OLED material itself is relatively complicated and the technical content is high, so the price is relatively high. Expensive, while the existing process uses evaporation, the utilization rate of OLED materials is low, generally below 10%

Method used

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  • Organic light-emitting device and display device
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  • Organic light-emitting device and display device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The synthesis of embodiment 1 compound P-1:

[0037]

[0038] In a 500ml three-necked flask, under nitrogen protection, add 300ml of dry toluene, 19.2g (0.05mol) of 3,3'-diphenyl-1H,1'H-2,2'-biindole, 38.9g (0.12mol) 4-bromotriphenylamine, 14.4 grams (0.15mol) of sodium tert-butoxide, 0.58 grams (0.001mol) of bis(dibenzylideneacetone) palladium, 2.02 grams (0.001mol) of 10% tri-tert-butyl The toluene solution of phosphine was heated to reflux for 8 hours and then lowered to room temperature, dilute hydrochloric acid was added, the layers were separated, the organic layer was washed with water until neutral, dried with anhydrous magnesium sulfate, separated by silica gel column, ethyl acetate: petroleum ether =1:5 (volume ratio) elution, the eluate was concentrated to dryness, and recrystallized from methanol / toluene mixed solvent to obtain 33.8 g of the compound represented by formula P-1 with a yield of 77.61%.

[0039] Mass spectrometry was performed on the obtain...

Embodiment 2

[0042] Synthesis of other part compounds of embodiment 2

[0043] Referring to the synthesis method of compound P-1, only the 4-bromotriphenylamine in it is replaced by the corresponding bromoarylamine as required, and other compounds shown in the compound of the present invention can be synthesized.

[0044] The following table lists the brominated aromatic amines used in the specific reactions of some compounds and the resulting product mass spectrometry data list as follows:

[0045]

[0046]

[0047]

[0048]

[0049] According to another aspect of the present invention, an organic electroluminescent device is provided, the hole injection material / hole transport material of the organic electroluminescent device is the biindoles containing triarylamine groups according to the present invention Material.

[0050] The typical structure of an organic electroluminescent device is: substrate / anode / hole injection layer / hole transport layer (HTL) / organic light-emitting ...

Embodiment 3

[0063] The compound of the present invention is used as the hole transport material in the organic electroluminescent device, and as a comparative organic electroluminescent device, the hole transport material is NPB.

[0064] The structure of the organic electroluminescence device is: ITO / HIL02 (100nm) / HTL (40nm) / EM1 (30nm) / ETL (20nm) / LiF (0.5nm) / Al (150nm).

[0065] In the production of the organic electroluminescent device in this embodiment, a glass substrate is selected, ITO is used as the anode material, HIL02 is used as the hole injection layer, EM1 is used as the main material of the organic light-emitting layer, TAZ is used as the electron transport layer material, and LiF / Al is used as the electron injection layer. layer / cathode material.

[0066] The preparation process of the organic electroluminescent device in this embodiment is as follows:

[0067] The glass substrate coated with the ITO transparent conductive layer (as the anode) is ultrasonically treated in a...

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Abstract

The invention relates to the technical field of display, in particular to a triarylamido-containing biindolyl material, an organic light-emitting device and a display device. According to the invention, a compound is shown as a formula (1): FORMULA. When the compound provided by the invention is used as a hole transporting material and / or a hole injecting material of the organic light-emitting device, the light-emitting efficiency of the organic light-emitting device is improved and the driving voltage of the organic light-emitting device is lowered.

Description

technical field [0001] The invention relates to the field of display technology, in particular to a biindole material containing a triarylamine group, an organic electroluminescent device and a display device. Background technique [0002] Organic Light Emitting Display (OLED) is a new type of flat-panel display. Compared with Liquid Crystal Display (LCD), it has the advantages of thinness, lightness, wide viewing angle, active luminescence, and continuously adjustable luminous color. , low cost, fast response speed, low energy consumption, low driving voltage, wide operating temperature range, simple production process, high luminous efficiency and flexible display, etc., have attracted great attention from the industrial and scientific circles. [0003] The development of organic electroluminescent devices has promoted the research on organic electroluminescent materials. Compared with inorganic light-emitting materials, organic electroluminescent materials have the follo...

Claims

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Application Information

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IPC IPC(8): C07D209/08H01L51/54
CPCC07D209/08H10K85/622H10K85/626H10K85/633H10K85/615H10K85/631H10K85/6572
Inventor 赵东敏
Owner 赵东敏