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Organic light-emitting diode device

An electroluminescent device and luminescent technology, applied in the direction of electric solid-state devices, electrical components, semiconductor devices, etc., can solve the problems of insufficient electron mobility and affecting the life of OLEDs, achieve simplified structure and preparation process, and improve current carrying Effect of sub-matching degree, high electron mobility

Active Publication Date: 2013-05-01
KUNSHAN VISIONOX DISPLAY TECH +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But Alq 3 The electron mobility of is still not high enough, and holes enter Alq 3 Easy to form Alq 3 Positive ions seriously affect the life of OLED

Method used

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  • Organic light-emitting diode device
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  • Organic light-emitting diode device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Device structure: ITO / NPB(40nm) / Alq 3 (50nm) / C5:CsCO 3 (20nm, 10%) / Al(150nm)

[0052] Take the ITO conductive glass substrate with a specific pattern etched as the substrate. The substrate is ultrasonically cleaned in deionized water containing a cleaning solution. The temperature of the cleaning solution is about 60℃, and then the cleaned substrate is washed with an infrared baking lamp. Bake and dry, put it into the evaporation chamber to sequentially evaporate the hole injection layer, the hole transport layer, the light emitting layer, the electron transport layer, the electron injection layer, and the cathode structure. The chamber pressure during the evaporation process is lower than 5.0×10- 3Pa.

[0053] In this embodiment, the first 40nm N,N'-bis-(1-naphthyl)-N,N'-diphenyl-1,1'-biphenyl-4,4'-diamine (NPB) on the ITO anode is used as a hole Transmission layer; continue to evaporate 50nm thick aluminum quinolate (Alq 3 ) As the light-emitting layer; a 20nm electron in...

Embodiment 2

[0055] Device structure: ITO / NPB(40nm) / Alq 3 (50nm) / C8:CsF(20nm, 10%) / Al(150nm)

[0056] The device with the above structure was prepared according to the method of Example 1, except that the C8-doped 10% by weight CsF in the compound of the present invention was used as the electron injection and transport function layer of the device.

Embodiment 3

[0058] Device structure: ITO / NPB(40nm) / Alq 3 (50nm) / C20:KBH(20nm, 10%) / Al(150nm)

[0059] The device with the above structure was prepared according to the method of Example 1, except that KBH doped with 10% by weight in C20 was used as the electron injection and transport function layer of the device.

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Abstract

The invention relates to a novel organic light-emitting device and provides an organic light-emitting diode device, which comprises a pair of electrodes and an organic light-emitting medium which is arranged between the pair of electrodes, wherein an electron injection and transmission functional layer is arranged between an organic light-emitting layer and a cathode and comprises at least one compound which is selected from a general formula; Ar is selected from sub-condensed aromatic with 6 to 30 carbon atoms and sub-polynuclear aromatic with 6 to 30 carbon atoms; n is an integer from 1 to 3; meanwhile, the electron injection and transmission functional layer also comprises a dopant which is selected from an alkali metal, an alkali metal oxide, an alkali metal halide, an alkali metal nitride and an alkali metal salt. The stability of the device can be improved; the current carrier matching degree of the organic light-emitting diode device can be improved; and cavities and electrons can be effectively limited in the light-emitting layer to obtain a high-efficiency stable light-emitting device.

Description

Technical field [0001] The invention relates to a new type of organic electroluminescence device, which belongs to the technical field of organic electroluminescence display. Background technique [0002] Nowadays, with the development of multimedia technology and the advent of the information society, the requirements for flat panel display performance are getting higher and higher. Organic electroluminescent displays have a series of advantages such as autonomous light emission, low-voltage DC drive, full curing, wide viewing angle, and rich colors. The response speed is 1000 times that of liquid crystal displays, and its manufacturing cost is lower than that of liquid crystal displays of the same resolution. Therefore, organic electroluminescence displays have broad application prospects. [0003] Organic electroluminescence display (also known as organic light-emitting diode, organic light-emitting diode, OLED) research began in the 1960s, Pope et al. (Pope M, Kallmann HP, and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/54
Inventor 邱勇谢静张国辉段炼
Owner KUNSHAN VISIONOX DISPLAY TECH