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Organic electroluminescent device and preparation method thereof

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 problems such as low luminous efficiency, low device life, and large current to drive light-emitting devices to achieve light efficiency. The effect of improving, uniformly dispersing, and reducing the starting voltage

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] The organic electroluminescent device of this embodiment has a structure: glass / ITO / Ag:WO 3 :m-MTDATA / TPD / NPB:Ir(MDQ) 2 (acac) / BAlq / Li 2 CO 3 :Alq 3 / Ag

[0055] The manufacturing method of the organic electroluminescent device is as follows:

[0056] 1. Wash the glass substrate ultrasonically with detergent, deionized water, isopropanol, and acetone for 20 minutes, and then dry it with nitrogen;

[0057] 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 100nm is sputtered on its surface as the anode layer; then plasma treatment is used;

[0058] 3. In the vacuum thermal evaporation system, the hole transport layer is evaporated on the surface of the ITO film:

[0059] First, the Ag, WO 3 And m-MTDATA are respectively placed in the three evaporation sources of the vacuum coating system to adjust the vacuum degree of the coating chamber to 5×10 -4 Pa, then Ag, WO 3 The two materials are heated to...

Embodiment 2

[0063] The organic electroluminescent device of this embodiment has a structure: glass / ITO) / Au:ReO 3 :MeO-TPD / NPB / NPB:Ir(MDQ) 2 (acac) / BAlq / LiN 3 :TPBi / Al.

[0064] The manufacturing method of the organic electroluminescent device is as follows:

[0065] 1. Wash the glass substrate ultrasonically with detergent, deionized water, isopropanol, and acetone for 20 minutes, and then dry it with nitrogen;

[0066] 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 100nm is sputtered on its surface as the anode layer; then plasma treatment is used;

[0067] 3. In the vacuum thermal evaporation system, the hole transport layer is evaporated on the surface of the ITO film:

[0068] First, combine Au and ReO 3 And MeO-TPD are respectively placed in the three evaporation sources of the vacuum coating system, and the vacuum degree of the coating chamber is adjusted to 5×10 -4 Pa, then Au, ReO 3 The two materials ar...

Embodiment 3

[0072] The organic electroluminescent device of this embodiment has a structure: glass / ITO / Al:Re 2 O 7 :NPB / m-MTDATA / NPB:Ir(MDQ) 2 (acac) / BAlq / LiF:BAlq / Ag-Mg.

[0073] The manufacturing method of the organic electroluminescent device is as follows:

[0074] 1. Wash the glass substrate ultrasonically with detergent, deionized water, isopropanol, and acetone for 20 minutes, and then dry it with nitrogen;

[0075] 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 100nm is sputtered on its surface as the anode layer; then plasma treatment is used;

[0076] 3. In the vacuum thermal evaporation system, the hole transport layer is evaporated on the surface of the ITO film:

[0077] First, the Al and Re 2 O 7 It is placed in the three evaporation sources of the vacuum coating system separately with NPB, and the vacuum degree of the coating chamber is adjusted to 5×10 -4 Pa, then Al, Re 2 O 7 The two materials ...

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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 three-element doped mixing material prepared by doping a metal oxide and a metal doping agent to a hole transmission matrix material. According to the organic electroluminescent device, the hole transmission layer is made of the three-element doped mixing material mixed by doping the metal oxide and the metal doping agent to the hole transmission matrix material, and the metal oxide 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.

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 (Organic Light Emission Diode), hereinafter referred to as OLED, has the characteristics of high brightness, wide range of materials, low driving voltage, fully cured active light emission, etc. It also has the advantages of high definition, wide viewing angle, and fast response speed. It is a kind of display technology and light source with great potential, which is in line with the development trend of mobile communication and information display in the information age, as well as the requirements of green lighting technology. It is currently the focus of many domestic and foreign researchers. [0003] The organic electroluminescent diode has a sandwich-like structure, with a cathode and an anode at the top and bottom. A single or multiple fu...

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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