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Organic light emission diode and preparation method thereof

An electroluminescence device and luminescence technology, which is applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of large driving current and low luminous efficiency

Inactive Publication Date: 2015-06-03
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] 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

Method used

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071] like figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: glass / ITO / NPB / Ir(piq) 2 (acac):CBP(10:100) / Bphen / BEDT-TTF:NTCDA(1:100) / CoO 2 / CeO 2 / m-MTDATA / Ir(piq) 2 (acac):CBP(10:100) / Bphen / Mg-Al, wherein the colon ":" indicates that the former is doped into the latter.

[0072] The preparation method of the organic electroluminescent device of this embodiment includes the following steps:

[0073] A glass is provided as the substrate 10, which is cleaned and dried for later use.

[0074] A layer of ITO conductive film, ie, the anode layer 20, is prepared on one surface of the substrate 10. After completion and cleaning, the sheet resistance of the anode layer 20 is 5Ω / □.

[0075] A layer of the first organic electroluminescence unit 30 is prepared on the surface of the anode layer 20 by vacuum evaporation technology:

[0076] 1 x 10 in vacuum -5 In the vacuum coating system of Pa, a first hole transport layer 301 with a t...

Embodiment 2

[0089] like figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: glass / IZO / MeO-TPD / DCJTB:Alq 3 (5:100) / TPBi / Pyronin B:NTCDA(10:100) / Ta 2 O 5 / V 2 O 5 / MeO-TPD / DCJTB:Alq 3 (5:100) / TPBi / Al, where a colon ":" indicates that the former is doped into the latter.

[0090] The preparation method of the organic electroluminescent device of this embodiment includes the following steps:

[0091] A glass is provided as the substrate 10, which is cleaned and dried for later use.

[0092] A layer of IZO conductive film, ie, the anode layer 20, is prepared on one surface of the substrate 10. After completion and cleaning, the sheet resistance of the anode layer 20 is 100Ω / □.

[0093] A layer of the first organic electroluminescence unit 30 is prepared on the surface of the anode layer 20 by vacuum evaporation technology:

[0094] 1 x 10 in vacuum -3 In the vacuum coating system of Pa, a first hole transport layer 301 with a thickness of 4...

Embodiment 3

[0107] like figure 1 As shown, the structure of the organic electroluminescent device of this embodiment is: glass / ITO / TPD / FIrpic:CBP(15:100) / BCP / BEDT-TTF:NTCDA(5:100) / CoO 2 / SnO 2 / NPB / DMQA / BPhen / Ag, where a colon ":" indicates that the former is doped into the latter.

[0108] The preparation method of the organic electroluminescent device of this embodiment includes the following steps:

[0109] A glass is provided as the substrate 10, which is cleaned and dried for later use.

[0110] A layer of ITO conductive film, ie, the anode layer 20, is prepared on one surface of the substrate 10. After completion and cleaning, the sheet resistance of the anode layer 20 is 50Ω / □.

[0111] A layer of the first organic electroluminescence unit 30 is prepared on the surface of the anode layer 20 by vacuum evaporation technology:

[0112] 1 x 10 in vacuum -4 In the vacuum coating system of Pa, a first hole transport layer 301 with a thickness of 50 nm is prepared on the surface of t...

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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 an N-type layer and a P-type layer; the P-type layer also comprises a first semiconductor oxide layer and a second semiconductor oxide layer, wherein the first semiconductor oxide layer and the second semiconductor oxide layer are successively laminated; the material of the N-type layer is obtained in a way that organic dopant is doped in electronic transmission materials so as to avoid a problem of dopant diffusion; the P-type layer is made of two types of semiconductor oxide materials which are laminated and arranged so as to be favorable for the transmission and the injection of electrons and holes. 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 electroluminescence devices, in particular to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic electroluminescent device (OLED, Organic Light Emission Diode), has the characteristics of high brightness, wide material selection range, low driving voltage, full curing active light emission, etc. A highly potential display technology and light source, 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, 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 appropriate organic materials and rational device structure design, the traditional organic electroluminescent devices have to obtain H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
Inventor 周明杰冯小明张娟娟王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD