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Organic electroluminescence device and preparation method thereof

An electroluminescent device and luminescent technology, which are applied in the fields of electric solid-state devices, chemical instruments and methods, semiconductor/solid-state device manufacturing, etc., can solve problems such as aging and failure of functional layer materials, shortening the life of organic electroluminescent devices, etc. Achieve the effect of slowing down the progress of aging and prolonging the service life

Active Publication Date: 2013-01-02
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, when the organic electroluminescent device is eroded by moisture and moisture, the internal functional layer materials of the organic electroluminescent device will age and fail, thereby shortening the life of the organic electroluminescent device

Method used

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  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof
  • Organic electroluminescence device and preparation method thereof

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preparation example Construction

[0040] Another object of the present invention is to provide a method for preparing the above-mentioned organic electroluminescent device, the steps of which are as follows:

[0041] S1, cleaning the anode substrate, and then performing activation treatment on the surface of the anode layer of the anode substrate;

[0042]S2. Using the method of vacuum evaporation or solution coating, sequentially prepare functional layers on the surface of the anode layer of the anode substrate, such as a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, an electron injection layer, a cathode layer, and the thicknesses of the hole injection layer, hole transport layer, light emitting layer, electron transport layer and electron injection layer are 10-15nm, 40-60nm, 10-50nm, 20-80nm, 1-2nm; Wherein, the cathode layer is a sandwich layer structure of ZnS-Ag-ZnS, and the thickness of the ZnS layer is 30nm, the thickness of the Ag layer is 10nm, an...

Embodiment 1

[0052] The organic electroluminescent device of the present embodiment has the following structure:

[0053] ITO glass / MoO 3 / NPB / TPBi:FIrpic / Alq3 / LiF / ZnS-Ag-ZnS / MgF 2 / ZnS / PET.

[0054] 1. Wash the substrate of ITO glass (wherein, ITO, i.e., indium tin oxide, is the anode layer and plays a conductive role; the glass is the substrate; ITO glass is obtained by purchasing) sequentially with detergent, ethanol, acetone, and pure water, and each In the cleaning stage, the ultrasonic cleaning machine is used for cleaning, each cleaning is 5 minutes, and the method is repeated for 5 minutes, respectively, and then dried in an oven for use;

[0055] 2. Perform surface activation treatment on the cleaned ITO glass to increase the oxygen content of the ITO surface layer and improve the work function of the ITO surface; the thickness of ITO is 100nm;

[0056] 3. Using the method of vacuum evaporation or solution coating, sequentially prepare a hole injection layer, a hole transport l...

Embodiment 2

[0063] The organic electroluminescent device of the present embodiment has the following structure:

[0064] ITO glass / WO 3 / TPD / TPBi:Ir(ppy) 3 / Alq3 / LiF / ZnS-Ag-ZnS / Alq3 / ZnSe / PET.

[0065] 1. Wash the substrate of ITO glass (wherein, ITO, i.e., indium tin oxide, is the anode layer and plays a conductive role; the glass is the substrate; ITO glass is obtained by purchasing) sequentially with detergent, ethanol, acetone, and pure water, and each In the cleaning stage, the ultrasonic cleaning machine is used for cleaning, each cleaning is 5 minutes, and the method is repeated for 5 minutes, respectively, and then dried in an oven for use;

[0066] 2. Perform surface activation treatment on the cleaned ITO glass to increase the oxygen content of the ITO surface layer and improve the work function of the ITO surface; the thickness of ITO is 100nm;

[0067] 3. Using the method of solution coating, a hole injection layer, a hole transport layer, a light-emitting layer, an electron...

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Abstract

The invention belongs to the field of photoelectric materials, and discloses an organic electroluminescence device and a preparation method thereof. The device comprises an anode substrate, a hole injection layer, a hole transmitting layer, a luminous layer, an electron transmitting layer, an electron injection layer, a cathode layer, a protecting layer, a first anti-corrosion layer and a second anti-corrosion layer which are sequentially stacked; the first anti-corrosion layer and the second anti-corrosion layer wrap and package the anode substrate, the hole injection layer, the hole transmitting layer, the luminous layer, the electron transmitting layer, the electron injection layer, the cathode layer and the protecting layer which are sequentially stacked from inside to outside; the protecting layer is made from MgF2, NPB (nomal propyl bromide) or Alq3; the first anti-corrosion layer is made from ZnS or ZnSe; and the second anti-corrosion layer is made from PET (polyethylene terephthalate). After the organic electroluminescence device is eroded by wet air and moisture, water can be effectively prevented from permeating into the organic electroluminescence device, so that the ageing of materials of the internal functional layers of the organic electroluminescence device is reduced, and the service life of the organic electroluminescence device is prolonged.

Description

technical field [0001] The invention relates to the field of photoelectric materials, in particular to an organic electroluminescence device. The invention also relates to a preparation method of the organic electroluminescence device. Background technique [0002] Organic electroluminescent device (OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is to make a layer of organic light-emitting material with a thickness of tens of nanometers on ITO glass as the light-emitting layer. The metal electrode of the work function, when the voltage is applied to the electrode, the light-emitting layer will produce light radiation. [0003] OLED devices have the advantages of active luminescence, high luminous efficiency, low power consumption, lightness, thinness, and no viewing angle restrictions. They are considered by industry insiders to be the new generation of devices that are most likely to occupy a dominant position ...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56C09K11/06
Inventor 周明杰王平钟铁涛陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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