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Organic light-emitting device and composite anode and manufacturing method thereof

A technology of organic light-emitting devices and composite anodes, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of poor thermal conductivity, poor electrical conductivity, shortened life, etc., and improve the thermal conductivity and thermal conductivity of OLEDs. The effect of good performance and low resistivity

Active Publication Date: 2010-11-24
SHENZHEN DANBANG INVESTMENT GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] (1) For large-size flat-panel displays and high-brightness light sources, the heat generated by OLEDs must be quickly conducted away through electrodes, otherwise OLEDs will be unstable and their lifespan will be shortened
However, the thermal conductivity of ITO is worse than that of metal, which is not conducive to heat conduction
[0010] (2) Similarly, for large-size flat-panel displays and high-brightness light sources, the conductivity of OLED electrodes must be good, otherwise, electrodes with poor conductivity will generate more heat, which will lead to unstable OLEDs and shortened lifespan
The conductivity of ITO is worse than that of metal, and ohmic heat will greatly reduce OLED life
[0011] (3) The hole injection ability needs to be further improved

Method used

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  • Organic light-emitting device and composite anode and manufacturing method thereof
  • Organic light-emitting device and composite anode and manufacturing method thereof
  • Organic light-emitting device and composite anode and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Such as image 3 As shown, an embodiment of a top-emitting organic light-emitting device includes sequentially arranged: a glass substrate 11, an aluminum bonding layer 12, a copper conductive layer 13, a hole injection layer 14, a hole transport layer 15, an electron transport and a light-emitting layer 16. Electron injection layer 17, transparent cathode layer 18. The hole injection layer 14 is formed by treating the copper surface with nitrogen and oxygen mixed gas plasma.

[0038] The production method is: use neutral detergent, acetone and ethanol, clean the glass substrate by ultrasonic cleaning, blow dry with nitrogen, and then prepare an Al film with a thickness of about 50-100nm by thermal evaporation or sputtering. Prepare a Cu film with a thickness of about 50-100nm on the bonding layer by thermal evaporation or sputtering, then place the sample in a radio frequency plasma generator, and pre-evacuate the vacuum chamber to a degree of 5×10 -4 Pa, then filled...

Embodiment 2

[0043] Such as Figure 4 As shown, an embodiment of a top-emitting organic light-emitting device includes sequentially arranged: a glass substrate 19, a silicon nitride bonding layer 20, a copper conductive layer 21, a hole injection layer 22, a hole transport layer 23, an electron transport layer and Light emitting layer 24 electron injection layer 25 , transparent cathode layer 26 . The hole injection layer 22 is formed by treating the copper surface with hydrogen sulfide plasma.

[0044] The production method is: use neutral detergent, acetone and ethanol, clean the glass substrate by ultrasonic cleaning, blow dry with nitrogen, and then prepare a silicon nitride film with a thickness of about 50nm by PECVD, and bond it to silicon nitride. On the layer, a Cu film with a thickness of about 10-200nm was prepared by thermal evaporation or sputtering, and then the sample was placed in a radio frequency plasma generator, and the vacuum chamber was pre-evacuated to a degree of 5...

Embodiment 3

[0048] Such as Figure 5 As shown, an embodiment of a top-emitting organic light-emitting device includes sequentially arranged: a glass substrate 27, a copper-aluminum alloy layer 28, a hole injection layer 29, a hole transport layer 30, an electron transport and light-emitting layer 31, and an electron injection layer 32. Transparent cathode layer 33. The hole injection layer 29 is formed by oxygen plasma treatment on the surface of the copper aluminum alloy.

[0049] The production method is as follows: use neutral detergent, acetone and ethanol, clean the glass substrate by ultrasonic cleaning, blow dry with nitrogen, and then prepare a copper-aluminum alloy layer with a thickness of about 50-100nm by magnetron sputtering. On the copper-aluminum alloy bonding layer, a Cu film with a thickness of about 50-100nm was prepared by thermal evaporation or sputtering, and then the sample was placed in a radio frequency plasma generator, and the vacuum chamber was pre-evacuated to...

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Abstract

The invention provides an organic light-emitting device and a composite anode and a manufacturing method thereof. The organic light-emitting device comprises a substrate, the composite anode, a hole transmission layer, a light-emitting layer, an electron injection layer and a transparent cathode, wherein the composite anode is formed on the substrate; a multi-layer organic layer is formed on the composite anode; the electron injection layer is formed on the organic layer; the transparent cathode is formed on the electron injection layer; the composite anode comprises a bonding layer, a horizontal conducting layer and a hole injection layer; the bonding layer is formed on the substrate; the horizontal conducting layer is formed on the bonding layer; the hole injection layer is formed on the horizontal conducing layer; the horizontal conducting layer contains copper; and the hole injection layer is formed by plasma treatment of the copper-containing horizontal conducting layer in certain atmosphere. The organic light-emitting device has the advantages of improving heat conductivity, electrical conductivity and hole injection capacity of the conducting layer of the anode, and stabilizing the copper-containing horizontal conducting layer.

Description

technical field [0001] The invention relates to an organic light-emitting device and a manufacturing method thereof, in particular to a composite anode of the organic light-emitting device and a manufacturing method thereof. Background technique [0002] Organic light-emitting devices (OLEDs) have great application prospects in the fields of flat-panel displays and planar light sources due to their advantages such as high luminance, low driving voltage, fast response speed, no viewing angle limitation, high energy efficiency, and ultra-light and ultra-thin. [0003] Usually an OLED device consists of a single-layer or multi-layer organic thin film sandwiched between two electrodes, and the typical working voltage is 2-10V. Electrons are injected from the cathode to the conduction band of the organic layer. The cathode generally uses opaque low work function metals, such as Mg, Ca, Li, etc. Because these metals are very active, alloys are often used instead, such as Mg-Ag al...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56H01L51/50
Inventor 刘萍
Owner SHENZHEN DANBANG INVESTMENT GROUP
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