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Organic light-emitting device and production method thereof

An electroluminescent device and electroluminescent technology, which are applied in the manufacturing of organic semiconductor devices, electric solid-state devices, and semiconductor/solid-state devices, etc., can solve the problems of reduced luminous efficiency, low probability of exciton recombination, and low electron transfer rate.

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

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Effect test

preparation example Construction

[0031] The method for preparing the above-mentioned organic electroluminescent device specifically includes the following steps:

[0032] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

[0033] 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.

[0034] 3. Next, an electron injection layer is prepared on the above electron transport layer, and the electron injection layer is composed of a rubidium compound doped layer and a rhenium compound doped layer.

[0035] Firstly, the rubidium compound doped layer is prepared by thermal resistance evaporation with a thickness of 10-30 nm, which is composed of rubidium compound and electron transport material. Described rubidium compound is rubidi...

Embodiment 1

[0049] Such as figure 1 As shown, the organic electroluminescent device in this embodiment is a layered structure, and each layer is in turn:

[0050] Anode conductive substrate 101 of glass / IZO, MoO 3 The hole injection layer 102 of material, the hole transport layer 103 of TAPC material, the light emitting layer 104 of BCzVBi material, the electron transport layer 105 of TPBI material, Rb 2 CO 3 :Alq 3 Material rubidium compound doped layer 106, ReO 3 : Rhenium compound doped layer 107 of BCzVBi material and cathode layer 108 of Ag material. The rubidium compound doped layer 106 and the rhenium compound doped layer 107 form an electron injection layer. (wherein the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping).

[0051] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0052] 1. Rinse the glass with distilled water and ethanol, and soak it in isopropanol overnight.

...

Embodiment 2

[0064] 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.

[0065] The organic electroluminescent device in this embodiment is a layered structure, and each layer is sequentially:

[0066] 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 DCJTB material, electron transport layer made of TPBI material, rubidium compound doped layer made of RbCl:Bphen, ReO 3 : a rhenium compound doped layer of BCzVBi material and a cathode layer of Ag material. 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).

[0067] The above-mentioned organic electroluminescent device is prepared according to the fo...

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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 doping layer and a rhenium compound layer; the rubidium compound doping layer is formed by a rubidium compound and an electron transmission material. The rubidium compound doping layer is formed by the rubidium compound and the electron transmission material, the rubidium compound is low in melting point and easy to evaporate and plate, work function is low due to 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 electroluminescent device. The invention also relates to a preparation method of the organic electroluminescent 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 penetra...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K50/171H10K2102/00H10K71/00
Inventor 周明杰黄辉张振华王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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