Supercharge Your Innovation With Domain-Expert AI Agents!

Organic electroluminescent device and its preparation method

An electroluminescent device and luminescent technology, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as failure of organic functional materials, degradation of electrode performance, and impact on device life, so as to improve effective protection , The preparation process is simple, and the effect of easy large-area preparation

Active Publication Date: 2016-04-13
OCEANS KING LIGHTING SCI&TECH CO LTD +2
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, due to the corrosion of organic electroluminescent devices by active substances such as external water and oxygen, organic functional materials will fail and electrode performance will decline. Therefore, organic electroluminescent devices generally have the defect of short life. To achieve a sufficient service life of the device, the most critical thing is to effectively package the device, so the quality of the package directly affects the life of the device

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic electroluminescent device and its preparation method
  • Organic electroluminescent device and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0036]The preparation method of the organic electroluminescent device of the present invention comprises the following steps:

[0037] S1, on the surface of the anode layer of the anode substrate 10, the vacuum evaporation functional layer 20 (hole injection layer 201, hole transport layer 202, light emitting layer 203, electron transport layer 204, electron injection layer 205) and cathode layer 30 are laminated in sequence;

[0038] S2. Vacuum-deposit an organic barrier layer 40 on the cathode layer 30; wherein, the material of the organic barrier layer 40 is copper phthalocyanine (CuPc), N,N'-diphenyl-N,N'-diphenyl (1-naphthyl)-1,1'-biphenyl-4,4'-diamine (NPB), 8-hydroxyquinoline aluminum (Alq3), 4,4',4"-tri(N-3- Methylphenyl-N-phenylamino)triphenylamine (m-MTDATA) or 4,7-diphenyl-1,10-phenanthroline (BCP); in the vacuum evaporation, the degree of vacuum is 1 ×10 -5 Pa-1×10 -3 Pa, the evaporation rate is

[0039] S3. Put the sample, fluoride and metal phthalocyanine c...

Embodiment 1

[0046] Embodiment 1 organic electroluminescent device

[0047] include:

[0048] (1) Anode base;

[0049] (2) Functional layer, located between the anode substrate and the cathode layer, comprising a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer and an electron injection layer stacked in sequence, and the hole injection layer is located at the anode on the base;

[0050] (3) cathode layer;

[0051] (4) An organic barrier layer, vapor-deposited on the cathode layer; the material of the organic barrier layer is CuPc, and the organic barrier layer is 6 layers, and the thickness of each layer is 300nm;

[0052] (5) Inorganic barrier layer, vapor-deposited on the organic barrier layer; the material of the inorganic barrier layer is a mixture of LiF doped with 20wt% CuPc; the inorganic barrier layer has 6 layers, and the thickness of each layer is 250nm.

[0053] The organic barrier layer and the inorganic barrier layer are eva...

Embodiment 2

[0079] Embodiment 2 organic electroluminescence device

[0080] include:

[0081] (1) anode base; with embodiment 1;

[0082] (2) functional layer; with embodiment 1;

[0083] (3) cathode layer; with embodiment 1;

[0084] (4) An organic barrier layer, vapor-deposited on the cathode layer; the material of the organic barrier layer is NPB, and the organic barrier layer is 5 layers, and the thickness of each layer is 250nm;

[0085] (5) Inorganic barrier layer, vapor-deposited on the organic barrier layer, the material of the inorganic barrier layer is CeF doped with 30wt% ZnPc 2 Composed mixture, the inorganic barrier layer is 5 layers, and the thickness of each layer is 300nm.

[0086] The organic barrier layer and the inorganic barrier layer are evaporated alternately.

[0087] The above (1)-(5) constitute an organic electroluminescent device.

[0088] (6) PET film, encapsulating the above-mentioned organic electroluminescent device in the PET film and the anode substra...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device comprises an anode substrate, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer stacked in sequence and a cathode layer, on which at least one organic barrier layer and one inorganic barrier layer are evaporated alternately. The organic electroluminescent device of the present invention adopts organic barrier layer and inorganic barrier layer alternate evaporation on the basis of the existing organic electroluminescent device, which improves the waterproof and oxygen-proof ability of the film layer, and effectively reduces the active substances such as external water and oxygen. The erosion of organic electroluminescent devices, thus forming an effective protection for the organic functional materials and electrodes of the device, and the service life has reached more than 3800 hours.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to an organic electroluminescent device and a preparation method thereof. Background technique [0002] An organic electroluminescent device (OrganicLight-EmittingDiode, OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is to make a layer of organic light-emitting material tens of nanometers thick on the indium tin oxide (IndiumTinOxides, ITO) glass as the light-emitting layer, and there is a metal electrode with a low work function above the light-emitting layer. Its light-emitting mechanism and process are to inject electrons and holes from the cathode and anode respectively, and the injected electrons and holes are transported in the organic layer and recombined in the light-emitting layer, thereby exciting the molecules of the light-emitting layer to generate singlet excitons. state excitons radiatively decay to emit ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/52H01L51/54H01L51/50H01L51/56
CPCH10K50/8445H10K71/00
Inventor 周明杰王平钟铁涛陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com