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Organic electroluminescent device and preparation 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 low device life, large current driving light-emitting devices, low luminous efficiency, etc., and improve the injection rate. efficiency, reducing the starting voltage, and improving the effect of luminous efficiency

Inactive Publication Date: 2014-02-19
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

[0004] So far, although researchers from all over the world have greatly improved the performance indicators of the device by selecting suitable organic materials and reasonable device structure design, due to the large current driving the light-emitting device, Low luminous efficiency and low device life

Method used

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  • Organic electroluminescent device and preparation method thereof
  • Organic electroluminescent device and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The organic electroluminescent device of this embodiment has a structure of: glass / ITO / ReCl 4 :m-MTDATA / TAPC / NPB:Ir(MDQ) 2 (acac) / BAlq / Li 2 CO 3 :Alq 3 / Ag

[0045] The fabrication method of the organic electroluminescent device is as follows:

[0046] 1. Use detergent, deionized water, isopropanol, and acetone to ultrasonically clean the glass substrate for 20 minutes, and then dry it with nitrogen;

[0047] 2. After the glass is cleaned, it is placed in a vacuum sputtering system, and an indium-doped tin oxide (ITO) film with a thickness of 100 nm is sputtered on its surface as an anode layer; then treated with plasma;

[0048] 3. In the vacuum thermal evaporation system, the hole transport layer (the material is ReCl 4 Doped into m-MTDATA, expressed as ReCl 4 :m-MTDATA, ReCl 4 The doping mass ratio is 5%, the thickness is 30nm), the electron blocking layer (the material is TAPC, the thickness is 10nm), the light-emitting layer (the material is Ir(MDQ) 2 (aca...

Embodiment 2

[0050] The organic electroluminescence device of the present embodiment, its structure is: glass / ITO) / ReF 4 :MeO-TPD / TAPC / TCTA:Ir(ppy) 3 / TPBi / LiN 3 :TPBi / Al.

[0051] The fabrication method of the organic electroluminescent device is as follows:

[0052] 1. Use detergent, deionized water, isopropanol, and acetone to ultrasonically clean the glass substrate for 20 minutes, and then dry it with nitrogen;

[0053] 2. After the glass is cleaned, it is placed in a vacuum sputtering system, and an indium-doped tin oxide (ITO) film with a thickness of 100 nm is sputtered on its surface as an anode layer; then treated with plasma;

[0054] 3. In the vacuum thermal evaporation system, the hole transport layer (the material is ReF 4 Doped into: MeO-TPD, expressed as ReF 4 : MeO-TPD, ReF 4 The doping mass ratio is 10%, the thickness is 50nm), the electron blocking layer (the material is TAPC, the thickness is 5nm), the light-emitting layer (the material is Ir(ppy) 3 Doped as a gu...

Embodiment 3

[0056] The organic electroluminescence device of present embodiment, its structure is: glass / ITO / ReCl 5 :NPB / TAPC / TCTA:Ir(ppy) 3 / BAlq / LiF:BAlq / Al-Mg.

[0057] The fabrication method of the organic electroluminescent device is as follows:

[0058] 1. Use detergent, deionized water, isopropanol, and acetone to ultrasonically clean the glass and wash the substrate for 20 minutes, and then dry it with nitrogen;

[0059] 2. After the glass is cleaned, it is placed in a vacuum sputtering system, and an indium-doped tin oxide (ITO) film with a thickness of 100 nm is sputtered on its surface as an anode layer; then treated with plasma;

[0060] 3. In the vacuum thermal evaporation system, the hole transport layer (the material is ReCl 5 Doped into NPB, expressed as ReCl 5 : NPB, ReCl 5The doping mass ratio is 15%, the thickness is 100nm), the electron blocking layer (the material is TAPC, the thickness is 10nm), the light-emitting layer (the material is Ir(ppy) 3 Doped as a gue...

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Abstract

The invention belongs to the field of organic semiconductor materials and discloses an organic electroluminescent device and a preparation method thereof. The organic electroluminescent device comprises a substrate, an anode layer, a hole transmission layer, an electronic barrier layer, a luminescent layer, a hole barrier layer, an electronic transmission layer and a cathode layer which are successively stacked. The hole transmission layer is made of a material mixed by doping a rhenium compound to a hole transmission matrix material. According to the organic electroluminescent device, the hole transmission layer is made of the material mixed by doping the rhenium compound to the hole transmission matrix material, and the rhenium compound can improve the conductivity of the hole transmission layer and remarkably reduce hole injection barrier so that the starting voltage of the organic electroluminescent device is reduced, and the service life of the device is prolonged; and at the same time, the rhenium compound can improve the carrier injection efficiency of the hole transmission layer so as to improve the luminescence efficiency of the device.

Description

technical field [0001] The invention relates to the field of organic semiconductor materials, in particular to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic Light Emission Diode, hereinafter referred to as OLED, has the characteristics of high brightness, wide range of material selection, low driving voltage, fully cured active light emission, etc., and has the advantages of high definition, wide viewing angle, and fast response speed. It is a display technology and light source with great potential, which conforms to the development trend of mobile communication and information display in the information age, as well as the requirements of green lighting technology, and is the focus of many researchers at home and abroad. [0003] Organic electroluminescent diodes have a sandwich-like structure, with a cathode and an anode at the top and bottom, and a single or multiple functional layers of organic materials of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/50H01L51/56
CPCH10K50/155H10K71/00
Inventor 周明杰王平冯小明张振华
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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