Organic electroluminescent device and manufacturing method thereof

An electroluminescent device and electroluminescent technology, which are applied in the fields of electro-solid devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of total reflection loss, low light output performance, etc., so as to improve the injection capacity and improve the color purity of light. , the effect of improving hole injection efficiency

Inactive Publication Date: 2015-03-25
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, when the refractive index of the glass of the existing light-emitting device is 1.5, and the ITO is 1.8, total reflection will occur when light reaches the glass from ITO, causing the loss of total reflection, resulting in lower overall light extraction performance

Method used

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  • Organic electroluminescent device and manufacturing method thereof
  • Organic electroluminescent device and manufacturing method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Such as figure 1 As shown, the organic electroluminescent device in this embodiment is a layered structure, and each layer is in turn:

[0037] Glass substrate 101, anode layer 102, metal doped layer 103, iron salt doped layer 104, hole injection layer 105, hole transport layer 106, light emitting layer 107, electron transport layer 108, electron injection layer 109 and cathode layer 110 . The metal doped layer 103 and the iron salt doped layer 104 constitute the heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / ITO / Ag:BCzVBi / FeCl 3 :F4-TCNQ / MoO 3 / NPB / BCzVBi / TAZ / CsF / Ag, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping. )

[0038] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0039] (1) Coating pretreatment

[0040] Take out the glass substrate 101 whose glass grade is N-LASF44, rinse it with distilled wat...

Embodiment 2

[0050] The organic electroluminescent device in this embodiment has a layered structure, and each layer is in turn: a glass substrate, an anode layer, a metal doped layer, an iron salt doped layer, a hole injection layer, a hole transport layer, a light emitting layer, Electron transport layer, electron injection layer and cathode layer.

[0051] The metal doped layer and the iron salt doped layer form the heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / IZO / Al:ADN / FeBr 3 :1T-NATA / WO 3 / NPB / ADN / TAZ / CsN 3 / Al, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping. The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0052] (1) Coating pretreatment

[0053] Take out the glass substrate whose glass grade is N-LAF36, rinse it with distilled water and ethanol, and soak it in isopropanol for one night.

[0054] (2) Preparation of ...

Embodiment 3

[0062] The organic electroluminescent device in this embodiment is a layered structure, and each layer is sequentially:

[0063] Glass substrate, anode layer, metal doped layer, iron salt doped layer, hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer and cathode layer. The metal doped layer and the iron salt doped layer form the heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / AZO / Pt:DCJTB / Fe 2 S 3 :2T-NATA / V 2 o 5 / TCTA / DCJTB / Bphen / Cs 2 CO 3 / Au, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping. The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0064] (1) Coating pretreatment

[0065] Take out the glass substrate whose glass grade is N-LASF31A, rinse it with distilled water and ethanol, and soak it in isopropanol for one night.

[0066] (2) Prepar...

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Abstract

The invention relates to an organic electroluminescent device and a manufacturing method of the organic electroluminescent device. The organic electroluminescent device is of a laminated structure. According to the laminated structure, a glass substrate, an anode layer, a scattering layer, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transfer layer, an electron injection layer and a cathode layer are sequentially stacked in a laminated mode, the scattering layer comprises a metal doping layer and a molysite doping layer, the metal doping layer is made of high-work-function metal materials and fluorescent materials, and the molysite doping layer is made of molysite materials and hole doping materials. According to the organic electroluminescent device and the manufacturing method, the scattering layer of the organic electroluminescent device improves the hole injection capacity, improves the light color purity, improves the electrical conductivity of the device and lowers the hole injection potential energy barrier, so that the hole injection efficiency is improved, and the light-extraction efficiency can be improved beneficially.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to an organic electroluminescent device. The invention also relates to a preparation method of the organic electroluminescent device. Background technique [0002] In 1987, C.W.Tang and Van Slyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. A high-brightness, high-efficiency double-layer organic electroluminescent device (OLED) has been prepared using ultra-thin film technology. Brightness up to 1000cd / m at 10V 2 , its luminous efficiency is 1.51lm / W, and its lifespan is more than 100 hours. [0003] In existing light-emitting devices, only about 18% of the light inside the device can be emitted to the outside, while the rest will be consumed outside the device in other forms, and there is a difference in refractive index between the interfaces (such as between glass and ITO difference in the refractiv...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K50/854H10K71/00
Inventor 周明杰黄辉张振华王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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