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Organic light emission diode and preparation method thereof

An electroluminescent device, electroluminescent technology

Inactive Publication Date: 2015-06-03
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

[0004] The object of the present invention is to provide an organic electroluminescent device, which is used to solve the problems of relatively large driving current and low luminous efficiency of traditional organic electroluminescent devices in the prior art

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  • Organic light emission diode and preparation method thereof
  • Organic light emission diode and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0068] Such as figure 1 As shown, the structure of the organic electroluminescent device of the present embodiment is: glass / ITO / NPB / Ir(MDQ) 2 (acac):NPB(10:100) / Bphen / TRZ 4 / ReO 3 / TRZ 4 / m-MTDATA / FIr 6 :CBP(15:100) / Bphen / Mg-Al, wherein the colon ":" indicates that the former is doped in the latter.

[0069] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0070] A glass is provided as the substrate 10, which is washed and dried for future use.

[0071] Prepare a layer of ITO conductive thin film on one surface of the substrate 10, that is, the anode layer 20, and clean it after completion. The sheet resistance of the anode layer 20 is 5Ω / □.

[0072] Prepare a layer of the first organic electroluminescent unit 30 on the surface of the anode layer 20 by vacuum evaporation technology:

[0073] In a vacuum of 1×10 -5 In the vacuum coating system of Pa, a first hole transport layer 301 with a thickness of...

Embodiment 2

[0087] Such as figure 1 As shown, the structure of the organic electroluminescent device of the present embodiment is: glass / IZO / MeO-TPD / DCJTB:Alq 3 (5:100) / TPBi / p-TPAm-NTAZ / MoO 3 / p-TPAm-NTAZ / MeO-TPD / DPVBi / TPBi / Al, where the colon ":" indicates that the former is doped in the latter.

[0088] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0089] A glass is provided as the substrate 10, which is washed and dried for future use.

[0090] Prepare a layer of IZO conductive film on one surface of the substrate 10, that is, the anode layer 20, and clean it after completion. The square resistance of the anode layer 20 is 100Ω / □.

[0091] Prepare a layer of the first organic electroluminescent unit 30 on the surface of the anode layer 20 by vacuum evaporation technology:

[0092] In a vacuum of 1×10 -3 In the vacuum coating system of Pa, a first hole transport layer 301 with a thickness of 20nm is prepared on ...

Embodiment 3

[0106] Such as figure 1 As shown, the structure of the organic electroluminescent device of the present embodiment is: glass / ITO / TPD / FIrpic:CBP(15:100) / BCP / CzOXD / V 2 o 5 / CzOXD / NPB / DMQA / BPhen / Ag, where the colon ":" indicates that the former is doped in the latter.

[0107] The preparation method of the organic electroluminescence device of this embodiment comprises the following steps:

[0108] A glass is provided as the substrate 10, which is washed and dried for future use.

[0109] Prepare a layer of ITO conductive thin film on one surface of the substrate 10, that is, the anode layer 20, and clean it after completion. The sheet resistance of the anode layer 20 is 50Ω / □.

[0110] Prepare a layer of the first organic electroluminescent unit 30 on the surface of the anode layer 20 by vacuum evaporation technology:

[0111] In a vacuum of 1×10 -4 In the vacuum coating system of Pa, a first hole transport layer 301 with a thickness of 50nm is prepared on the surface of th...

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Abstract

The invention relates to an organic light emission diode and a preparation method thereof. The diode is provided with a plurality of organic light emission units, wherein an electric charge generation layer is contained between two adjacent organic light emission units and comprises a first bipolar transmission layer, a semiconductor oxide layer and a second bipolar transmission layer, wherein the first bipolar transmission layer and the second bipolar transmission layer both adopt the same kind of organic material to enable the transmission of electrons and holes to be balanced, and the semiconductor oxide layer is used as an electric charge separation site to enable the electrons and the holes to be transmitted to the direction of the bipolar transmission layers on two sides. According to the above arrangement, electric charge separation efficiency and electron transmission efficiency are improved, the drive current of the whole organic light emission diode is lowered, light emission efficiency is improved, and light emission efficiency is higher even under the action of equivalent drive current. In addition, organic materials which are convenient for vacuum evaporation are selected to further lower the complexity of preparation technology.

Description

technical field [0001] The invention relates to the field of organic electroluminescent devices, in particular to an organic electroluminescent device and a preparation method thereof. Background technique [0002] Organic Light Emission Diode (OLED, Organic Light Emission Diode) 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. A display technology and light source with great potential, in line with the development trend of mobile communication and information display in the information age, and the requirements of green lighting technology, is the focus of many researchers at home and abroad. [0003] Although researchers from all over the world have greatly improved the performance indicators of organic electroluminescent devices by selecting suitable organic materials and reasonable device struct...

Claims

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Application Information

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IPC IPC(8): H01L51/54H01L51/52H01L51/56
CPCH10K50/14H10K71/00
Inventor 周明杰冯小明张娟娟王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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