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

Organic light emission diode device and application thereof

An electroluminescent device and electroluminescent technology, applied in the fields of electro-solid devices, electrical components, organic chemistry, etc., can solve the problem of efficiency roll-off, difficult and high exciton utilization rate, high fluorescence radiation efficiency, and low S1 state radiation transition rate and other problems, to achieve the effect of efficiency and life improvement, high efficiency

Active Publication Date: 2017-08-18
VALIANT CO LTD
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] (1) The T1 and S1 states of the designed molecule have strong CT features and a very small S1-T1 state energy gap, although high T can be achieved by the TADF process 1 →S 1 State exciton conversion rate, but at the same time lead to low S1 state radiative transition rate, therefore, it is difficult to have both (or simultaneously achieve) high exciton utilization rate and high fluorescence radiation efficiency;
[0007] (2) Even if doped devices have been used to alleviate the T-exciton concentration quenching effect, the efficiency of most TADF material devices has a serious roll-off at high current densities

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 emission diode device and application thereof
  • Organic light emission diode device and application thereof
  • Organic light emission diode device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1 Compound 1

[0068] The concrete synthetic route of this compound is provided now:

[0069]

[0070] Add 0.01mol 3,6-dibromo-1,8-diaza-9-fluorenone, 0.025mol 10H-phenoxazine, 0.03mol sodium tert-butoxide to a 250ml four-necked flask under nitrogen atmosphere , 1×10 -4 mol Pd 2 (dba) 3 , 1×10 -4 mol of tri-tert-butylphosphine, 150ml of toluene, heated to reflux for 24 hours, sampling plate, the reaction was complete; naturally cooled, filtered, the filtrate was rotary evaporated, and passed through a silica gel column to obtain the target product with a purity of 99.2% and a yield of 75.00%.

[0071] Elemental analysis structure (molecular formula C 35 h 20 N 4 o 3 ): theoretical value C, 77.20; H, 3.70; N, 10.29; O, 8.81; test value: C, 77.29;

[0072] HPLC-MS: The molecular weight of the material is 544.15, and the measured molecular weight is 544.62.

Embodiment 2

[0073] Example 2 Compound 4

[0074]

[0075] The preparation method of compound 4 is the same as that of Example 1, except that the raw material 9,10-dihydro-9,9-dimethylacridine is used instead of 10H-phenoxazine.

Embodiment 3

[0076] Example 3 Compound 7

[0077] The concrete synthetic route of this compound is provided now:

[0078]

[0079] In a 250ml four-necked flask, add 0.01mol 3,6-bis-(4-bromophenyl)-1,8-diaza-9-fluorenone, 0.025mol 5-phenyl -10-hydrophenazine, 0.03mol sodium tert-butoxide, 1×10 -4 mol Pd 2 (dba) 3 , 1×10 -4 mol of tri-tert-butylphosphine, 150ml of toluene, heated to reflux for 24 hours, sampled and plated, the reaction was complete; naturally cooled, filtered, the filtrate was rotary evaporated, and passed through a silica gel column to obtain the target product with a purity of 99.5% and a yield of 72.00%.

[0080] Elemental analysis structure (molecular formula C 59 h 38 N 6 O): theoretical value C, 83.67; H, 4.52; N, 9.92; O, 1.89; tested value: C, 83.73; H, 4.39; N, 9.90;

[0081] HPLC-MS: The molecular weight of the material is 846.31, and the measured molecular weight is 846.40.

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
Thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses an organic light emission diode device and application thereof. The device comprises a hole transport layer, a light emission layer and an electron transport layer. The material of the light emission layer of the device comprises a compound comprising a 1, 8-diazafluoran-9-one group, and the structural formula of the compound is shown in the general formula (1). According to the 1, 8-diazafluoran-9-one material, due to a small triplet and singlet energy difference, energy transfer between host and guest materials can be realized easily, energy that is originally lost in a heat form is easily available, the radiative transition efficiency of the light emission layer is enhanced, and the high efficiency of the device can be acquired more easily. Further, when a 1, 8-diazafluoran-9-one compound material is directly used as a doped material, or the 1, 8-diazafluoran-9-one compound serves as a host material, and a fluorescent material is selected as the doped material, light emission radiation of the doped material is acquired more easily, and a long service life of the material can be acquired more easily.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an organic electroluminescence device in which the light-emitting layer material is a 1,8-diaza-9-fluorenone compound and an application thereof. Background technique [0002] Organic electroluminescent (OLED: Organic Light Emission Diodes) device technology can be used to manufacture new display products and also can be used to make new lighting products, which is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. [0003] The OLED light-emitting device is like a sandwich structure, including electrode material film layers, and organic functional materials sandwiched between different electrode film layers. Various functional materials are superimposed on each other according to the application to form an OLED light-emitting device. As a current device, when a voltage is applied to the electrodes at both ...

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): H01L51/52H01L51/54C07D471/04C07D519/00
CPCC07D471/04C07D519/00H10K85/657H10K85/6572H10K50/11
Inventor 李崇徐凯张兆超
Owner VALIANT 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