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Organic light-emitting device and preparation method thereof

An electroluminescent device and luminescence technology, which is applied in the manufacture of organic semiconductor devices, electric solid devices, semiconductor/solid state devices, etc., can solve the problems of reducing luminous efficiency, affecting device performance, and uneven doping, so as to improve luminescence Efficiency, enhanced light scattering, and improved compactness

Inactive Publication Date: 2014-05-28
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

However, this method has problems such as uneven doping, affecting device performance, and reducing luminous efficiency.

Method used

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  • Organic light-emitting device and preparation method thereof
  • Organic light-emitting device and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] A method for preparing an organic electroluminescent device, comprising the following steps:

[0061] (1) Conductive anode substrate pretreatment

[0062] Sonicate the ITO substrate with a thickness of 100nm for 15 minutes with detergent and deionized water in order to remove organic pollutants on the glass surface.

[0063] (2) Preparation of hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer

[0064] Place the pretreated ITO substrate in a vacuum chamber (high vacuum coating system, Shenyang Scientific Instrument Development Center Co., Ltd.), and evacuate to 5×10 -3 Pa, with the vapor deposition rate of 1nm / s 2 o 5 Evaporated on the ITO substrate as a hole injection layer with a thickness of 50nm;

[0065] Evaporate TAPC on the hole injection layer as a hole transport layer at an evaporation rate of 1 nm / s, with a thickness of 40 nm;

[0066] Evaporate BCzVBi on the hole transport layer as a light...

Embodiment 2

[0074] A method for preparing an organic electroluminescent device, comprising the following steps:

[0075] (1) Conductive anode substrate pretreatment

[0076] The AZO substrate with a thickness of 80nm was ultrasonicated for 15 minutes with detergent and deionized water in order to remove organic pollutants on the glass surface.

[0077] (2) Preparation of hole injection layer, hole transport layer, light-emitting layer, electron transport layer, and electron injection layer. Place the pretreated AZO substrate in a vacuum chamber (high vacuum coating system, Shenyang Scientific Instrument Development Center Co., Ltd.) , evacuated to 2×10 -4 Pa, WO was deposited at a deposition rate of 10nm / s 3 Evaporated on the AZO substrate as a hole injection layer with a thickness of 80nm;

[0078] N,N'-diphenyl-N,N'-bis(1-naphthyl)-1,1'-biphenyl-4,4'-diamine (NPB) was deposited at a deposition rate of 0.1nm / s Evaporated on the hole injection layer as a hole transport layer with a th...

Embodiment 3

[0086] A method for preparing an organic electroluminescent device, comprising the following steps:

[0087] (1) Conductive anode substrate pretreatment

[0088] The IZO substrate with a thickness of 300nm was ultrasonicated for 15 minutes with detergent and deionized water in sequence to remove organic pollutants on the glass surface.

[0089] (2) Preparation of hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer

[0090] Place the pretreated IZO substrate in a vacuum chamber (high vacuum coating system, Shenyang Scientific Instrument Development Center Co., Ltd.), and evacuate to 2.5×10 -3 Pa, MoO was deposited at a deposition rate of 5nm / s 3 Evaporated on the IZO substrate as a hole injection layer with a thickness of 40nm;

[0091] Evaporate TCTA on the hole injection layer as a hole transport layer at an evaporation rate of 0.5nm / s, and its thickness is 45nm;

[0092] Alq was deposited at a deposition ra...

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Abstract

The invention provides an organic light-emitting device and a preparation method thereof. The organic light-emitting device includes a conductive anode substrate, a cavity injection layer, a cavity transmission layer, a light-emitting layer, an electronic transmission layer, an electronic injection layer and a cathode layer, which are laminated sequentially. The material of the electronic transmission layer is TiO2, the surface of which is covered with ZnO. The electronic transmission layer is vapor deposited on the light-emitting layer via electronic beams. The organic light-emitting device is excellent in light-emitting efficiency and light-emitting performance, simple in preparation method process, low in cost and applicable to industrial production.

Description

technical field [0001] The invention belongs to the field of organic electroluminescence, and in particular relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] An organic electroluminescent device (OLED) is an energy conversion device that uses organic materials as light-emitting materials and can convert applied electrical energy into light energy. It has outstanding performances such as ultra-thin, self-luminous, fast response, low power consumption, etc., and has extremely broad application prospects in display, lighting and other fields. [0003] The structure of organic electroluminescent devices is a sandwich structure, with one or more organic thin films sandwiched between the cathode and the conductive anode. In a device with a multi-layer structure, the inside of the two poles mainly includes a light emitting layer, an injection layer and a transport layer. The organic electroluminescent device is a carr...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/56
CPCH10K50/166H10K2102/00H10K71/00
Inventor 周明杰王平黄辉陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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