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

Electroluminescent material, preparation method of electroluminescent material, and light-emitting device

A technology of electroluminescent materials and luminescent layers, which is applied in the direction of luminescent materials, electrical solid devices, electrical components, etc., and can solve the problems of general electroluminescent efficiency and reduced quantum efficiency of film-state fluorescence.

Active Publication Date: 2019-07-09
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the device structure, traditional fluorescent materials can only use singlet excitons, and their external quantum efficiency does not exceed 5%, while blue light molecules such as anthracene and perylene with rigid planar structures can achieve triplet-triplet fusion. 11% external quantum efficiency, however, the π-π stacking of this structure is tight, which has a serious concentration quenching effect, resulting in a greatly reduced film-state fluorescence quantum efficiency, and general electroluminescent efficiency. Therefore, it is necessary to provide an electroluminescent Electroluminescent material with high luminescent efficiency, preparation method of electroluminescent material, and light-emitting 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
  • Electroluminescent material, preparation method of electroluminescent material, and light-emitting device
  • Electroluminescent material, preparation method of electroluminescent material, and light-emitting device
  • Electroluminescent material, preparation method of electroluminescent material, and light-emitting device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] The following will clearly and completely describe the technical solution in the application with reference to the accompanying drawings in the implementation manner of the application. Apparently, the described implementations are only some of the implementations of this application, not all of them. Based on the implementation manners in this application, all other implementation manners obtained by those skilled in the art without creative efforts shall fall within the scope of protection of this application.

[0027] The application provides an electroluminescent material, the structural formula of the electroluminescent material is where the R 1 The structural formula is One of.

[0028] The present application also provides a preparation method of the electroluminescence material. The preparation method of the electroluminescent material comprises:

[0029] A. The first reactant and the second reactant are provided, and the first reactant and the second...

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 provides an electroluminescent material, a preparation method of the electroluminescent material, and a light-emitting device. The electroluminescent material is of an asymmetric structure, and a tetraphenyl ethylene structure with aggregation induced luminescence is connected with a perylene structure capable of achieving high efficiency by generating triplet state-triplet state fusion, so that the aggregation-induced quenching effect of the perylene structure is effectively inhibited, and film-state luminescence efficiency is improved. Meanwhile, a structure unit with high electron mobility is introduced to improve the carrier transmission balance and increase the composite probability, so that the electroluminescent material which can emit blue light and has high electroluminescent efficiency is achieved, and the preparation method of the electroluminescent material, and the light-emitting device are achieved.

Description

technical field [0001] The present application relates to the display field, in particular to an electroluminescence material, a preparation method of the electroluminescence material and a light emitting device. Background technique [0002] In the device structure, traditional fluorescent materials can only use singlet excitons, and their external quantum efficiency does not exceed 5%. However, blue light molecules such as anthracene and perylene with rigid planar structures can achieve triplet-triplet fusion. 11% external quantum efficiency, however, the π-π stacking of this structure is tight, which has a serious concentration quenching effect, resulting in a greatly reduced film-state fluorescence quantum efficiency and general electroluminescent efficiency. Therefore, it is necessary to provide a An electroluminescent material with high luminescent efficiency, a preparation method of the electroluminescent material, and a light-emitting device. Contents of the invent...

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): C07D213/127C07D235/18C07D249/08C07D271/107C07F5/02C07F9/53C09K11/06H01L51/54
CPCC07D235/18C07F9/5325C07F5/02C07D271/107C07D213/127C07D249/08C09K11/06C09K2211/1007C09K2211/1011C09K2211/1044C09K2211/1029C09K2211/1014C09K2211/1048C09K2211/1059H10K85/622H10K85/6565H10K85/654H10K85/6572H10K50/11
Inventor 白科研
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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