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

Organic electroluminescent device with hole transmitting regulating and controlling character

An electroluminescent device and hole transport technology, applied in electroluminescent light sources, electro-solid devices, electro-light sources, etc. The effect of carrier transport ability, film-forming performance improvement, and production cost reduction

Inactive Publication Date: 2009-11-18
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] At present, the realization of the organic small molecule hole transport layer that makes up the device usually adopts the method of high vacuum coating, the process is relatively complicated, the requirements for equipment and the environment are high, the energy consumption is high and time-consuming, and the corresponding device cost is relatively high. high

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 electroluminescent device with hole transmitting regulating and controlling character
  • Organic electroluminescent device with hole transmitting regulating and controlling character
  • Organic electroluminescent device with hole transmitting regulating and controlling character

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Such as figure 2 As shown, the organic functional layer 3 in the device structure includes a hole transport layer 3-1, a light emitting layer and an electron transport layer 3-2-3.

[0049] The material of the hole transport layer of the device is PS:NPB, and the material of the light emitting layer and electron transport material is Alq 3 , The cathode layer is made of Mg:Ag alloy. The entire device structure is described as:

[0050] Glass substrate / ITO / PS:NPB(100nm) / Alq 3 (50nm) / Mg:Ag(200nm)

[0051] The preparation method is as follows:

[0052] ①Use detergent, ethanol solution and deionized water to ultrasonically clean the transparent conductive substrate ITO glass, and dry it with dry nitrogen after cleaning. Wherein the ITO film on the glass substrate is used as the anode layer of the device, the square resistance of the ITO film is 10O / , and the film thickness is 180nm.

[0053] ② Move the dried substrate into a vacuum chamber, and pretreat the ITO glass...

Embodiment 2

[0060] Such as figure 2 As shown, the organic functional layer 3 in the structure of the device includes a hole transport layer 3-1, a light emitting layer and an electron transport layer 3-2-3.

[0061] The material of the hole transport layer of the device is PS:TPD, and the material of the light emitting layer and the electron transport layer is Alq 3 , The cathode layer is made of Mg:Ag alloy. The entire device structure is described as:

[0062] Glass substrate / ITO / PS:TPD(100nm) / Alq 3 The preparation process of the (50nm) / Mg:Ag(100nm) device is similar to that of Example 1.

Embodiment 3

[0064] Such as image 3 As shown, the organic functional layer 3 in the structure of the device includes a hole transport layer 3-1, a light emitting layer 3-2, and an electron transport layer 3-3.

[0065] The hole transport layer material of the device is PC:TPD, the light emitting layer material is ruberene, and the electron transport material is Bepp 2 , The cathode layer is made of Mg:Ag alloy. The entire device structure is described as:

[0066] Glass substrate / ITO / PC:TPD(100nm) / ruberene(50nm) / Bepp 2 (15nm) / Mg:Ag(100nm)

[0067] The fabrication process of the device is similar to that of 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

No PUM Login to View More

Abstract

The invention discloses an organic electroluminescent device with hole transport regulation characteristics, which comprises a solid substrate, an anode layer and a cathode layer, wherein the electrode layer is located on the surface of the solid substrate, and an organic electroluminescence device is arranged between the anode layer and the cathode layer. Functional layer, the organic functional layer includes a hole transport layer and a light-emitting layer that can drive light emission in an external electric field, characterized in that: the hole transport layer is a doped dielectric polymer material and a small molecule hole transport material Hybrid system; the organic functional layer also includes an electron transport layer, a carrier injection layer and a buffer layer. The hole transport material is a doping system of dielectric polymer and small molecule hole transport material. The doping system can adjust the hole transport performance of small molecules by adjusting the doping ratio of polymer matrix and small molecule impurities, thereby Changing the hole mobility of organic functional thin films to balance and match the transport and recombination of positively charged carriers.

Description

technical field [0001] The invention relates to the technical field of organic electroluminescence in electronic components, in particular to an organic electroluminescence device with hole transport regulation properties. Background technique [0002] With the continuous improvement of the informatization level of human society, people have higher and higher performance requirements for the carrier of the human-machine interface - the information display device. The continuous progress of display technology and the continuous emergence of new technologies have driven the leapfrog development of the display industry. After undergoing innovations from black and white, color, ultra-flat, flat-screen, and cathode ray tube displays to today's brilliant LCD (liquid crystal display) and PDP (plasma display) flat-panel displays, its industrial scale is getting bigger and bigger. The field of application is also becoming wider and wider. In the field of display, organic electrolum...

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 Patents(China)
IPC IPC(8): H01L51/50H01L51/54H05B33/12
Inventor 于军胜蒋亚东锁钒
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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