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Organic electroluminescent device and preparation method thereof

An electroluminescence device and a luminescence technology, which are applied in the manufacture of organic semiconductor devices, electric solid devices, semiconductor/solid state devices, etc., can solve the problems of light loss, poor refractive index, low light performance, etc.

Inactive Publication Date: 2014-08-27
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

[0004] In traditional light-emitting devices, the glass substrate of indium tin oxide transparent conductive film (ITO) is generally used as the light-emitting surface. Absorption and reflection can finally be emitted into the air, but there is a difference in refractive index between the glass and ITO interface, which will cause total reflection of light when it reaches the glass from ITO, resulting in loss of light output, resulting in lower overall light output performance

Method used

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  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof

Examples

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Comparison scheme
Effect test

Embodiment 1

[0077] A method for preparing an organic electroluminescent device, comprising the following steps:

[0078] (1) After rinsing the N-LASF44 glass with distilled water and ethanol, soak it in isopropanol for one night to obtain a clean glass substrate;

[0079] (2) In the high vacuum coating system (Shenyang Scientific Instrument Development Center Co., Ltd.), the pressure is 5×10 -4 Under the condition of Pa, thermal resistance vapor deposition of Ta on one side of a clean glass substrate at a deposition rate of 3nm / s 2 o 5 : CuPc mixture to prepare the light extraction layer with a thickness of 400nm, and then carry out heat preservation annealing treatment for 30min under the condition of 200°C, wherein Ta 2 o 5 : The CuPc mixture is CuPc doped into Ta according to the mass fraction of 20%. 2 o 5 mixture formed in

[0080] (3) At an accelerating voltage of 400V, a magnetic field of 100G, and a power density of 20W / cm 2 Under the condition of , the ITO anode was prepar...

Embodiment 2

[0089] A method for preparing an organic electroluminescent device, comprising the following steps:

[0090] (1) After rinsing the N-LASF36 glass with distilled water and ethanol, soak it in isopropanol for one night to obtain a clean glass substrate;

[0091] (2) In the high vacuum coating system (Shenyang Scientific Instrument Development Center Co., Ltd.), the pressure is 2×10 -3 Under the condition of Pa, thermal resistance evaporation of Nb on one side of a clean glass substrate with an evaporation rate of 1nm / s 2 o 5 : ZnPc mixture to prepare the light extraction layer, the thickness is 50nm, then carry out heat preservation annealing treatment under 50 ℃ condition for 60min, wherein Nb 2 o 5 : ZnPc mixture is ZnPc doped to Nb according to 10% mass fraction 2 o 5 mixture formed in

[0092] (3) At an accelerating voltage of 300V, a magnetic field of 50G, and a power density of 1W / cm 2 Under the condition of , the IZO anode was prepared on the other side of the glas...

Embodiment 3

[0097] (1) After rinsing the N-LASF31A glass with distilled water and ethanol, soak it in isopropanol for one night to obtain a clean glass substrate;

[0098] (2) In the high vacuum coating system (Shenyang Scientific Instrument Development Center Co., Ltd.), the pressure is 5×10 -5 Under the condition of Pa, thermal resistance vapor deposition of VO on one side of a clean glass substrate at a deposition rate of 10nm / s 2 : MgPc mixture to prepare the light extraction layer, the thickness is 500nm, then carry out the heat preservation annealing treatment under 300 ° C for 10min, wherein VO 2 : MgPc mixture is MgPc according to mass fraction 10% doped to VO 2 mixture formed in

[0099] (3) At an acceleration voltage of 800V, a magnetic field of 200G, and a power density of 40W / cm 2 Under the condition of , the AZO anode was prepared on the other side of the glass substrate by magnetron sputtering, with a thickness of 300nm;

[0100] (4) At a pressure of 5×10 -5 Under the c...

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Abstract

The invention provides an organic electroluminescent device and a preparation method thereof. A piece of optical glass with a refractive rate greater than 1.8 is taken as a substrate, a light extraction layer matching the substrate is prepared at the back side of the glass substrate, a mixture formed by use of a metal phthalocyanine compound and a metal oxide with a refractive rate greater than 2.0 is taken as the material of the light extraction layer, and the light extraction layer exhibits a good light scattering effect such that the total reflection of light when the light is emitted from the glass substrate to air can be reduced, and the light can be effectively emitted to the air. The preparation method is simple, control and operation are facilitated, and raw materials are easily obtained.

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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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K71/16H10K71/166H10K85/311H10K50/854H10K2102/00
Inventor 周明杰王平黄辉
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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