Organic light-emitting device and production method thereof

An electroluminescence device and a luminescence technology, which are applied in the fields of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve problems such as poor ability to isolate water and oxygen, low probability of exciton recombination, unfavorable electron injection, etc.

Inactive Publication Date: 2015-05-20
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

[0003] However, in the existing organic electroluminescent devices, the electron injection layer is one of the important functional layers. During the manufacturing process, due to the poor ability of the material selected for the electron injection layer to isolate water and oxygen, water vapor will penetrate through cracks and affect Electrical Properties of Thin Film Transistors
At the same time, the selected material is not conducive to the injection of electrons, so the transport rate of electrons is low, which is two or three orders of magnitude lower than the transport rate of holes. The area is not in the light-emitting area, so that the luminous efficiency is reduced

Method used

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

Examples

Experimental program
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Effect test

preparation example Construction

[0036] The method for preparing the above-mentioned organic electroluminescent device specifically includes the following steps:

[0037] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

[0038] 2. Prepare a conductive anode film on the glass cleaned in the above steps to obtain an anode conductive substrate, and then vapor-deposit sequentially on the anode conductive substrate to prepare a hole injection layer, a hole transport layer, a light-emitting layer, and an electron transport layer.

[0039] 3. Next, an electron injection layer is prepared on the electron transport layer. The electron injection layer is composed of a rubidium compound layer, a ternary doped layer and a rhenium compound layer.

[0040] First adopt thermal resistance evaporation described rubidium compound, its material is rubidium carbonate (Rb 2 CO 3 ), rubidium chloride (RbCl), rubidium nitrate (RbNO 3 ) or rubidium sulfate (Rb 2 SO 4 ), the thickness i...

Embodiment 1

[0055] Such as figure 1 As shown, the organic electroluminescent device in this embodiment is a layered structure, and each layer is in turn:

[0056] Anode conductive substrate 101 of glass / IZO, MoO 3 The hole injection layer 102 made of TAPC material, the hole transport layer 103 made of TAPC material, the light emitting layer 104 made of ADN material, the electron transport layer 105 made of TPBI material, the rubidium compound layer 106 made of RbCl material, the ternary doped layer of Sr:Ag:MgS material Hybrid layer 107, ReO 2 The rhenium compound layer 108 made of Ag material and the cathode layer 109 made of Ag material. The rubidium compound layer 106, the ternary doped layer 107 and the rhenium compound layer 108 form an electron injection layer. (wherein the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping).

[0057] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

...

Embodiment 2

[0071] The layered structure of the organic electroluminescent device of the following examples 2-4 is basically the same as that of the example 1, so no illustration will be given here.

[0072] The organic electroluminescent device in this embodiment is a layered structure, and each layer is sequentially:

[0073] Anode conductive substrate of glass / IZO, MoO 3 Hole injection layer made of TAPC material, hole transport layer made of TAPC material, light emitting layer made of ADN material, electron transport layer made of TPBI material, Rb 2 CO 3 Rubidium compound layer made of material, ternary doped layer made of Mg:Al:ZnS, ReO 3 The rhenium compound layer of material and the cathode layer of Ag material. The passivation layer, the rubidium compound doped layer and the rhenium compound layer constitute the electron injection layer. (wherein the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping).

[0074] The above-mentioned organic elec...

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Abstract

The invention relates to an organic light-emitting device and a production method thereof. The organic light-emitting device is of a layered structure and comprises an anode conducting substrate, a hole injection layer, a hole transmission layer, a light-emitting layer, an electron transmission layer, an electron injection layer and a cathode layer which are stacked in sequence; the electron injection layer comprises a rubidium compound layer, a ternary doping layer and a rhenium compound layer; the rubidium compound layer is made of rubidium carbonate, rubidium chloride and rubidium nitrate or rubidium sulfate, the ternary doping layer is made of materials of low-work function metal, high-work function metal and metal sulfide. The rubidium compound layer in the electron injection layer is low in melting point and easy to evaporate and plate; work function is low due to existing of metal ions, electron injection barrier between the electron transmission layer and the injection layer can be lowered, and injection of electrons is benefited.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to an organic electroluminescence device. The invention also relates to a preparation method of the organic electroluminescence device. Background technique [0002] In 1987, C.W.Tang and Van Slyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. A high-brightness, high-efficiency double-layer organic electroluminescent device (OLED) was fabricated using ultra-thin film technology, and its brightness reached 1000cd / m at 10V 2 , its luminous efficiency is 1.51lm / W, and its lifespan is more than 100 hours. [0003] However, in the existing organic electroluminescent devices, the electron injection layer is one of the important functional layers. During the manufacturing process, due to the poor ability of the material selected for the electron injection layer to isolate water and oxygen, water vapor will penet...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
Inventor 周明杰黄辉张振华王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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