Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic light-emitting device and preparation method thereof

A technology of electroluminescent devices and organic light-emitting layers, applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as damage, inapplicability to mass production, and limit the performance of luminescent devices, and achieve simplified preparation The effect of excellent process and device performance and excellent electron transport performance

Inactive Publication Date: 2020-08-25
BEIJING JIAOTONG UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited selection of materials currently available for cross-linking reactions, and the solubility of organic semiconductor materials in organic solvents is similar, the device film interfaces prepared by the two methods will be damaged to varying degrees, which limits the solution method of organic electroluminescence. Device performance is further improved
Therefore, the current solution method for preparing organic electroluminescent devices often uses water-soluble solvent spin coating method to prepare hole injection layer, organic semiconductor material is dissolved in organic solvent spin coating method to prepare light-emitting layer, and electron transport layer and electrodes are vacuum evaporated. preparation, but this is not suitable for mass production on the market

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 light-emitting device and preparation method thereof
  • Organic light-emitting device and preparation method thereof
  • Organic light-emitting device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0051] The embodiment of the present invention provides a method for preparing an organic electroluminescence device, see figure 2 ,include:

[0052] S101: preparing an anode 2 on a transparent substrate 1;

[0053] In this step, indium tin oxide is plated on the transparent substrate 1; the substrate 1 is respectively soaked in substrate detergent, deionized water, and absolute ethanol, and the soaked substrate 1 is cleaned by an ultrasonic cleaner; Drying the cleaned substrate 1 with nitrogen gas, and treating the dried substrate 1 with oxygen plasma for 3 minutes to obtain an anode 2;

[0054] Among them, the transparent substrate is a hard substrate or a flexible substrate, the hard substrate is glass, silicon dioxide or quartz, and the flexible substrate is polyethylene terephthalate, polyethylene naphthalate or polyimide .

[0055] It should be noted that the ultrasonic cleaning in step S101 can effectively remove organic matter and impurities on the surface of the s...

Embodiment 4

[0090] On the basis of Example 3, the light-emitting material of the organic light-emitting layer 4 is selected from SpiroAC-TRZ, and the specific preparation process is: the blue light TADF material 10-(4-(4,6-diphenyl-1,3,5-triazin-2 -yl)phenyl)-10H-spiro[acridine-9,9'-fluoren e](SpiroAC-TRZ) was dissolved in chloroform (CF): chlorobenzene (CB) at a volume ratio of 1:1 in a mixed solvent at 10 mg / ml , heated and stirred for 6 hours, wherein the heating temperature was 60 degrees Celsius. Dissolve the bipolar small molecule host material 3′-bis(9H-carbazol-9-yl)-1,1′-biphenyl (mCBP) at 10 mg / ml in chloroform (CF): chlorobenzene (CB) In a mixed solvent with a volume ratio of 1:1, heat and stir for 6 hours, wherein the heating temperature is 60 degrees Celsius. The obtained blue-light SpiroAC-TRZ solution and the host material CzSi solution were miscible at a volume ratio of 1:10, heated and stirred for 12 hours to obtain 300 microliters of a light-emitting layer solution with...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Thicknessaaaaaaaaaa
Luminescence peakaaaaaaaaaa
Login to View More

Abstract

The invention provides an organic light-emitting device and a preparation method thereof. The organic light-emitting device comprises a transparent substrate, an anode, a hole injection layer, an organic light-emitting layer, an electron transport layer, a cathode modification layer and a cathode, the preparation method of the organic light-emitting device comprises the following steps: preparingthe anode on the transparent substrate; preparing the hole injection layer on the anode; preparing the organic light-emitting layer on the hole injection layer; preparing the electron transport layeron the organic light-emitting layer; preparing the cathode modification layer on the electron transport layer; and preparing the cathode on the cathode modification layer. According to the invention,the preparation process of the organic light-emitting device is greatly simplified, and materials are saved; the device is excellent in performance and is good in flexibility, the device can be prepared in a large area, and a film layer is not damaged.

Description

technical field [0001] The invention relates to the technical field of display lighting, in particular to an organic electroluminescence device and a preparation method thereof. Background technique [0002] In recent years, organic electroluminescent devices have attracted widespread attention in the display lighting industry. Due to the advantages of organic semiconductor materials such as low cost, green, spin-coating solutions, and large-area flexible devices, the research on organic electroluminescent devices has attracted much attention. Compared with LED displays and liquid crystal displays, organic electroluminescent devices have the characteristics of active light emission, fast response, low energy consumption, and wide viewing angles, which make organic electroluminescent devices have broad application prospects. They can be used not only for small-area mobile phone screens, but also for For large-area TV screens, flexible screens and lighting sources can be prep...

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
IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K71/12H10K85/10H10K50/16H10K71/00
Inventor 姜吉鑫乔泊赵谡玲宋丹丹徐征
Owner BEIJING JIAOTONG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com