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Blue light organic light-emitting device and organic light-emitting display

A technology of organic light-emitting devices and organic light-emitting layers, which is applied in the manufacture of electric solid-state devices, semiconductor devices, semiconductor/solid-state devices, etc., can solve the problems of poor energy level matching, insignificant effects, complicated processes, etc., and achieve the goal of improving lifespan Effect

Active Publication Date: 2014-04-16
BEIJING VISIONOX TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the low carrier mobility or poor energy level matching of the materials used in this type of barrier layer, the driving voltage of the device will increase accordingly
Another way is to add a control layer composed of two organic compounds, such as disclosed in CN101692482, the invention patent titled "light-emitting element, light-emitting device and electronic equipment", but the application of this technology in blue light devices The effect is not significant, and two new materials need to be used, making the process more complicated

Method used

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  • Blue light organic light-emitting device and organic light-emitting display
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  • Blue light organic light-emitting device and organic light-emitting display

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Deposit ITO on the glass substrate as the anode of the OLED blue light device, and etch out the required pattern, with O 2 Plasma treatment for 3 minutes. The resulting substrate was placed in a vacuum, and 50 nm of a mixture of MTDATA and F4TCNQ was deposited by co-evaporation as a hole injection layer, wherein F4TCNQ was 4% by weight relative to MTDATA. Next, 20 nm of NPB was deposited as a hole transport layer. A 25 nm mixture of BH-3 and BD-1 was then co-evaporated as an emitting layer, wherein BD was 5% by weight relative to BH. A 3 nm mixture of BH-1 and C1 was deposited as a transition layer, where C1 was 5% by weight relative to BH. Then 20 nm of E-1 was deposited as an electron transport layer. Keeping the vacuum constant, deposit 0.5nm LiF as electron injection layer. Finally, 150 nm of Al is deposited as the cathode. Transfer the substrate to pure N 2 encapsulation in the environment. Thus, an OLED blue light device is fabricated.

[0075] figure 2 ...

Embodiment 2

[0077] Deposit ITO on the glass substrate as the anode of the OLED blue light device, and etch out the required pattern, with O 2 Plasma treatment for 3 minutes. The resulting substrate was placed in a vacuum, and 50 nm of a mixture of MTDATA and F4TCNQ was deposited by co-evaporation as a hole injection layer, wherein F4TCNQ was 4% by weight relative to MTDATA. Next, 20 nm of NPB was deposited as a hole transport layer. A 25 nm mixture of BH-3 and BD-1 was then co-evaporated as an emitting layer, wherein BD was 5% by weight relative to BH. A mixture of E-9 and C545T was deposited as a transition layer at 5 nm, where C545T was 1% by weight relative to E-10. Then 20 nm of E-10 was deposited as an electron transport layer. Keeping the vacuum constant, deposit 0.5nm LiF as electron injection layer. Finally, 150 nm of Al is deposited as the cathode. Transfer the substrate to pure N 2 encapsulation in the environment. Thus, an OLED blue light device is fabricated.

[0078] ...

Embodiment 3

[0080] Deposit ITO on the glass substrate as the anode of the OLED blue light device, and etch out the required pattern, with O 2 Plasma treatment for 3 minutes. The resulting substrate was placed in a vacuum, and 50 nm of a mixture of MTDATA and F4TCNQ was deposited by co-evaporation as a hole injection layer, wherein F4TCNQ was 4% by weight relative to MTDATA. Next, 20 nm of NPB was deposited as a hole transport layer. A 25 nm mixture of BH-3 and BD-1 was then co-evaporated as an emitting layer, wherein BD was 5% by weight relative to BH. A mixture of E-11 and LiQ was deposited as a transition layer at 8 nm, where LiQ was 100% by weight relative to E-11. 20 nm of a mixture of E-11 and LiQ were then deposited as an electron transport layer, LiQ being 120% by weight relative to E-11. in. Keeping the vacuum constant, deposit 0.5nm LiF as electron injection layer. Finally, 150 nm of Al is deposited as the cathode. Transfer the substrate to pure N 2 encapsulation in the en...

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Abstract

The invention discloses a bright light organic light-emitting device which comprises an electronic transmission layer and an organic light-emitting layer. The organic light-emitting layer is composed of blue light body materials and blue light dyestuff. A transition layer is arranged between the electronic transmission layer and the organic light-emitting layer and is composed of electron trap materials and transition layer body materials. According to the organic light-emitting device, the transition layer used for improving the electron distribution condition is arranged between the electronic transmission layer and the organic light-emitting layer, so that the balance of charge carriers is achieved, the service life of the organic light-emitting device is prolonged, the formation of excitons cannot be influenced, and efficiency cannot be influenced. According to the blue light organic light-emitting device, the transition layer used for improving the electron distribution condition is arranged between the electronic transmission layer and the organic light-emitting layer, so that the balance of charge carriers is achieved, the service life of the bright light organic light-emitting device is prolonged, the formation of excitons cannot be influenced, and efficiency cannot be influenced.

Description

technical field [0001] The invention relates to organic light emitting display technology, in particular to a blue light organic light emitting device and an organic light emitting display using the blue light organic light emitting device. Background technique [0002] OLED (Organic Light-Emitting Diode, Organic Light-Emitting Diode) is a self-luminous display, which forms a color display through red, green and blue light-emitting devices. Among the three-color light-emitting devices, blue light devices have been one of the main directions of OLED research, and the short lifetime of blue light is its main disadvantage. [0003] At present, the main body of the light-emitting layer of blue OLEDs is anthracene derivatives, which have good electron transport properties, making the recombination region close to the interface between the light-emitting layer and the hole transport layer. The interface is prone to charge accumulation, resulting in excessive carrier concentration...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
CPCH10K30/865
Inventor 刘嵩何麟
Owner BEIJING VISIONOX TECH
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