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Organic electroluminescence device and production 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 water vapor affecting electrical properties, poor water blocking ability, etc. Corrosive and stress durability, and the effect of strong water and oxygen resistance

Inactive Publication Date: 2015-05-20
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

However, the water blocking ability of organic materials is poorer than that of inorganic materials, so water vapor easily penetrates into organic light-emitting devices and affects its electrical properties.

Method used

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  • Organic electroluminescence device and production method thereof
  • Organic electroluminescence device and production method thereof
  • Organic electroluminescence device and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0040] The method for preparing the above organic electroluminescent device specifically includes the following steps:

[0041] (A) Using a vacuum evaporation method to sequentially form a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode layer on the cleaned anode conductive substrate;

[0042] (B) On the cathode layer, a plasma-enhanced chemical vapor deposition method is used to prepare a first organic barrier layer, and then a magnetron sputtering method is used to prepare a first inorganic barrier layer on the organic barrier layer. A plasma-enhanced chemical vapor deposition method is used to prepare a second organic barrier layer on the first inorganic barrier layer. Finally, a magnetron sputtering method is used to prepare a second inorganic barrier layer on the organic barrier layer. The barrier layer, the first inorganic barrier layer, the second organic barrier layer, and the secon...

Embodiment 1

[0055] Such as figure 1 As shown, the organic electroluminescent device of this embodiment has a layered structure, and each layer is in order: anode conductive substrate 101, hole injection layer 102, hole transport layer 103, light emitting layer 104, electron transport layer 105, electron injection The layer 106, the cathode layer 107, the first organic barrier layer 108, the first inorganic barrier layer 109, the second organic barrier layer 110, and the second inorganic barrier layer 111 are sequentially overlapped.

[0056] The structure of the organic electroluminescent device is ITO / MoO 3 :NPB / TCTA / TPBI:Ir(ppy) 3 / Bphen / CsN 3 :Bphen / Al / SiOxNy / SiC:MgAl 2 O 4 / SiOxNy / SiC:CdS, where: the oblique bar " / " indicates a layered structure, and the colon ":" indicates mutual doping. Specifically (in the following embodiments, the doping method here is the same as that in Embodiment 1, and will not be repeated here):

[0057] ITO is the material of the anode conductive substrate 101; ...

Embodiment 2

[0081] Such as figure 2 As shown, the organic electroluminescent device of this embodiment has a layered structure, and each layer is in order: anode conductive substrate 201, hole injection layer 202, hole transport layer 203, light emitting layer 204, electron transport layer 205, electron injection The layer 206, the cathode layer 207, the first organic barrier layer 208, the first inorganic barrier layer 209, the second organic barrier layer 210, and the second inorganic barrier layer 211 are sequentially overlapped.

[0082] The structure of the organic electroluminescent device is ITO / MoO 3 :NPB / TCTA / TPBI:Ir(ppy) 3 / Bphen / CsN 3 :Bphen / Al / SiOxNy / WC:Bi 2 Ti 4 O 11 / SiOxNy / PbS:WC, where: the oblique bar " / " represents the layered structure, the colon ":" represents mutual doping (the material of each layer of this embodiment is not exactly the same as that of embodiment 1, but the method of doping It is the same as embodiment 1, and will not be repeated).

[0083] The above-men...

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Abstract

The invention relates to an organic electroluminescence device and a production method thereof. The organic electroluminescence device is of a layered structure. The layered structure comprises a cathode layer and barrier layers arranged on the cathode layer. The barrier layers include a first organic barrier layer, a first inorganic barrier layer, a second organic barrier layer and a second inorganic barrier layer which are stacked sequentially. The first organic barrier layer and the second organic barrier layer are made of nitrogen oxygen silicon compound films. The chemical formula of nitrogen oxygen silicon compounds is SiOxNy. The first inorganic barrier layer is made of a mixture composed of oxides and carbides. The second inorganic barrier layer is made of a mixture composed of carbides and sulfides. The organic electroluminescence device is high in compactness and water oxidation resistance due to the organic barrier layers and the inorganic barrier layers which are stacked alternately, and the production method has the advantages of cheap raw material, simple technique, easiness in large-area production and the like.

Description

Technical field [0001] The invention relates to the field of optoelectronic devices, in particular to organic electroluminescent devices and a preparation method thereof. Background technique [0002] Organic electroluminescent device (OLED) is a current-type semiconductor light-emitting device based on organic materials. Its typical structure is to make a layer of tens of nanometers thick organic light-emitting material on the indium tin oxide (ITO) glass as the light-emitting layer, and there is a layer of low work function metal electrode above the light-emitting layer. When a voltage is applied to the electrode, the light-emitting layer generates light radiation. [0003] OLED devices have the advantages of active light emission, high luminous efficiency, low power consumption, lightness, thinness, and no viewing angle limitation. They are considered by the industry to be the new generation of devices most likely to occupy a dominant position in the future lighting and display...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/52H01L51/54H01L51/56
CPCH10K50/844H10K71/00
Inventor 周明杰钟铁涛王平陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD