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Organic light-emitting device and preparation method for same

An electroluminescent device and luminescent technology, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of short life of light-emitting devices, material aging, failure, etc., and achieve high density and long life , Anti-corrosion effect

Inactive Publication Date: 2015-03-18
OCEANS KING LIGHTING SCI&TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] After the organic electroluminescent device is corroded by moisture and moisture, the material of the internal components of the organic electroluminescent device will be aged and then become invalid, so that the life of the organic electroluminescent device is relatively short

Method used

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  • Organic light-emitting device and preparation method for same
  • Organic light-emitting device and preparation method for same
  • Organic light-emitting device and preparation method for same

Examples

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preparation example Construction

[0040] Please also see figure 2 , the preparation method of the organic electroluminescent device 100 of one embodiment, it comprises the following steps:

[0041] Step S110 , forming a functional layer 20 on the anode 10 .

[0042] The functional layer 20 includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer stacked in sequence.

[0043]The anode 10 may be a conductive glass substrate or a conductive organic polyethylene terephthalate (PET) film substrate. The anode 10 has an ITO layer prepared with an anode pattern. In this embodiment, the thickness of the ITO layer is 100 nm. Of course, the thickness of the ITO layer is not limited to 100 nm, and other thicknesses can also be selected as required.

[0044] Before forming the functional layer 20, the surface of the anode 10 is pretreated to remove pollutants on the surface of the substrate 10, and the surface is activated to increase...

Embodiment 1

[0069] The structure prepared in this example is: ITO / NPB: MoO 3 / TCTA / TPBI:Ir(ppy) 3 / Bphen / Bphen:CsN 3 / Al / The organic electroluminescent device with the cap; wherein, the oblique bar " / " indicates a layered structure, and the colon ":" indicates doping, the same below.

[0070] The preparation method of the above-mentioned organic electroluminescent device comprises the following steps:

[0071] 1. Form a functional layer on the anode.

[0072] Anode 10 is conductive glass. The anode 10 has an ITO layer prepared with an anode pattern. The thickness of the ITO layer was 100 nm.

[0073] Before forming the functional layer 20, the surface of the anode 10 is pretreated to remove pollutants on the surface of the substrate 10, and the surface is activated to increase the oxygen content on the surface of the anode 10 to improve the work function of the surface of the anode 10. Specifically, the anode 10 is ultrasonically cleaned for 5 minutes with acetone-free, ethanol, io...

Embodiment 2

[0088] The structure prepared in this example is: ITO / NPB: MoO 3 / TCTA / TPBI:Ir(ppy) 3 / Bphen / Bphen:CsN 3 / Al / organic electroluminescent devices with capsulation.

[0089] The preparation method of the above-mentioned organic electroluminescent device comprises the following steps:

[0090] 1. Form a functional layer on the anode.

[0091] Anode 10 is conductive glass. The anode 10 has an ITO layer prepared with an anode pattern. The thickness of the ITO layer was 100 nm.

[0092] Before forming the functional layer 20, the surface of the anode 10 is pretreated to remove pollutants on the surface of the substrate 10, and the surface is activated to increase the oxygen content on the surface of the anode 10 to improve the work function of the surface of the anode 10. Specifically, the anode 10 is ultrasonically cleaned for 5 minutes with acetone-free, ethanol, ionized water, and ethanol in sequence, and then blown dry with nitrogen and oven-dried.

[0093] The material o...

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Abstract

The invention discloses an organic light-emitting device. The organic light-emitting device comprises an anode, a luminous layer, a cathode and a packaging cover, which are sequentially laminated, wherein the luminous layer and the cathode are packaged on the anode by virtue of the packaging cover; the packaging cover comprises a silicon carbonitride layer and a barrier layer formed on the surface of the silicon carbonitride layer; a material for the barrier layer comprises nitride and boride; the nitride is at least one of trisilicon tetranitride, aluminum nitride, boron nitride, hafnium nitride, tantalum nitride and titanium nitride; the boride is at least one of aluminum boride, lanthanum hexaboride, vanadium boride, niobium boride, titanium diboride and molybdenum boride. The organic light-emitting device is longer in service life. The invention also provides a preparation method for the organic light-emitting device.

Description

technical field [0001] The invention relates to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic electroluminescent device (OLED) is a current-mode semiconductor light-emitting device based on organic materials. Its typical structure is to prepare a layer of organic light-emitting material with a thickness of tens of nanometers on the ITO glass as the light-emitting layer, and there is a metal electrode with a low work function above the light-emitting layer. When a voltage is applied to the electrodes, the light-emitting layer produces light radiation. [0003] After the organic electroluminescent device is corroded by moisture and moisture, the materials of the internal components of the organic electroluminescent device will be aged and then become invalid, so that the life of the organic electroluminescent device is relatively short. Contents of the invention [0004] Based on this, it is necessary to provi...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/56
CPCH10K71/12H10K50/844H10K71/00
Inventor 周明杰钟铁涛王平陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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