Check patentability & draft patents in minutes with Patsnap Eureka AI!

Organic light-emitting device and application thereof

An electroluminescent device, organic technology, applied in the direction of electro-solid devices, electrical components, semiconductor devices, etc., can solve the problems of reducing the efficiency of the light-emitting layer, increasing the driving voltage, and difficult to achieve high luminous efficiency of the device.

Active Publication Date: 2020-10-16
JILIN OPTICAL & ELECTRONICS MATERIALS
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the compound has a high HOMO energy level, the driving voltage decreases, but the efficiency of the light-emitting layer also decreases
On the contrary, if the compound has a low HOMO energy level, the efficiency of the light-emitting layer increases, but the driving voltage also increases, which makes it difficult to achieve high luminous efficiency 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 light-emitting device and application thereof
  • Organic light-emitting device and application thereof
  • Organic light-emitting device and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0066]

[0067]

[0068] Wash the ITO / Ag / ITO film (ITO thickness is 14nm, Ag thickness is 150nm) on the glass substrate (150nm) of the OLED device for 2 times in distilled water, ultrasonic cleaning for 30 minutes, repeated cleaning 2 times with distilled water, ultrasonic After washing with distilled water for 10 minutes, ultrasonically wash with isopropanol, acetone, methanol and other solvents in order, then dry them, transfer them to a plasma cleaner, wash for 5 minutes, and send them to an evaporation machine.

[0069] The compound 4,4',4"-tris[2-naphthylphenylamino]triphenylamine (2-TNATA) was introduced into the chamber of the vacuum vapor deposition device, and then the pressure in the chamber of the device control to 10 -6 support. Thereafter, an electric current was applied to the cell to evaporate the material introduced above, thereby forming a hole injection layer having a thickness of 15 nm on the ITO substrate. Next, compound HT1-1 was introduced into an...

Embodiment 2

[0073] The luminescence auxiliary layer compound HT2-1 is replaced with HT2-5, and other technical solutions are the same as in Example 1.

Embodiment 3

[0075] The luminescence auxiliary layer compound HT2-1 is replaced with HT2-11, and other technical solutions are the same as in Example 1.

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-emitting device, which comprises a substrate, and a first electrode layer, a hole transport region, a light-emitting layer, an electron transport region and asecond electrode layer which are sequentially arranged on the substrate, wherein the hole transport region at least comprises a hole transport layer and a light emitting auxiliary layer; the light-emitting auxiliary layer includes a compound represented by formula I or formula II. Furthermore, the compound represented by formula I or formula II satisfies:-5.45 eV < = HOMO energy level < =-5.40 eV.The light emitting layer includes a green light carbazole-based host material. Compared with the prior art, the device prepared from the luminous auxiliary layer material with the HOMO energy level of-5.45 eV < = HOMO < =-5.40 eV is designed for the green light carbazole host material, the luminous efficiency of the device can be remarkably improved, the service life of the device is prolonged, and the driving voltage is reduced.

Description

technical field [0001] The invention relates to the technical field of organic photoelectric materials, and more specifically relates to an organic electroluminescent device and its application. Background technique [0002] Organic electroluminescent device technology can be used to manufacture new display products, and can also be used to prepare new lighting products. It is expected to replace the existing liquid crystal display and fluorescent lighting, and has a wide application prospect. The organic electroluminescent device is a current device. When a voltage is applied to the electrodes at its two ends, and the electric field acts on the positive and negative charges in the film layer of the organic layer functional material, the positive and negative charges are further recombined in the organic light-emitting layer, that is, an organic electroluminescent device is generated. Electromechanical Luminescence. [0003] Organic electroluminescent devices generally have...

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): H01L51/50H01L51/54
CPCH10K85/636H10K85/633H10K85/615H10K85/654H10K85/6576H10K85/6574H10K85/6572H10K50/156H10K50/11
Inventor 马晓宇张雪王进政黄悦张鹤王铁姚明明
Owner JILIN OPTICAL & ELECTRONICS MATERIALS
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