Thermal active delay fluorescent (TADF) molecular material, synthesis method thereof, and electroluminescence device

An electroluminescent device, a technology of thermal activation delay, applied in luminescent materials, electro-solid devices, chemical instruments and methods, etc., can solve problems such as improving and unfavorable top emission device efficiency, achieve good luminescence spectrum, suppress radiation transition rate, etc. The effect of reducing, large rigidity

Inactive Publication Date: 2019-11-12
WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
View PDF3 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, at present, the half-maximum width (FWHM) of TADF materials is relatively wide, which is not conducive to the improvement of the efficiency of top-emitting devices.

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
  • Thermal active delay fluorescent (TADF) molecular material, synthesis method thereof, and electroluminescence device
  • Thermal active delay fluorescent (TADF) molecular material, synthesis method thereof, and electroluminescence device
  • Thermal active delay fluorescent (TADF) molecular material, synthesis method thereof, and electroluminescence device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] The description of the following embodiments refers to the attached drawings to illustrate specific embodiments in which the present invention can be implemented. The directional terms mentioned in the present invention, such as "up", "down", "front", "rear", "left", "right", "top", "bottom", etc., are only for reference to additional drawings direction. Therefore, the directional terms used are used to describe and understand the present invention, rather than to limit the present invention.

[0028] The present invention provides a thermally activated delayed fluorescence molecular material, which has the following general structural formula:

[0029]

[0030] Wherein, X includes carbon, oxygen, and sulfur; R groups include aryl, alkyl aryl and nitrogen-containing aryl.

[0031] Further, the molecular structural formula of the thermally activated delayed fluorescence molecular material includes one of the following:

[0032]

[0033]

[0034] In order to explain the present...

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 a thermal active delay fluorescent (TADF) molecular material, a synthesis method thereof, and an electroluminescence device. A series of nitrogenous-carbonyl type TADF moleculesis synthesized, and the nitrogenous-carbonyl type TADF molecules have an intramolecular multiple resonance effect so that a luminescence spectrum can be narrowed well; and the nitrogenous-carbonyl type TADF molecules are provided with super-large planes, large rigidity can be shown, thus the molecules have the high intersystem crossing speed constant and inverse intersystem crossing speed constant, radiative transition speed lowering caused by the energy gap law can be effectively inhibited, thus the high photoluminescence quantum yield (PLQY) is obtained, meanwhile the stability of the TADFmaterial is improved, and the life of the device can be prolonged.

Description

Technical field [0001] The invention relates to the field of display technology, in particular to a thermally activated delayed fluorescent molecular material, a synthesis method thereof, and an electroluminescent device. Background technique [0002] Organic light-emitting diodes (OLEDs), due to active light emission, large viewing angle, fast response speed, wide temperature adaptation range, low driving voltage, low power consumption, high brightness, simple production process, light and thin, and can Flexible display and other advantages have shown great application prospects in the field of OLED display and lighting, attracting the attention of scientific researchers and companies. At present, Samsung and LG have implemented OLEDs in mobile phones. In OLED, the pros and cons of the material of the light-emitting layer are decisive for the industrialization of OLED. The usual luminescent layer material consists of host and guest luminescent materials, and the luminous effic...

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 Applications(China)
IPC IPC(8): C07D471/16C07D498/16C07D513/16C09K11/06H01L51/50H01L51/54
CPCC07D471/16C07D498/16C07D513/16C09K11/06C09K2211/1029C09K2211/1033C09K2211/1037C09K2211/1007C09K2211/1014H10K85/657H10K85/6572H10K50/11
Inventor 王彦杰
Owner WUHAN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap