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Organic electroluminescent component and manufacturing method thereof

An electroluminescence device and electroluminescence technology, which are applied in the manufacturing of organic semiconductor devices, electric solid state devices, semiconductor/solid state devices, etc. question

Inactive Publication Date: 2015-04-29
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, the difference in work function between the anode layer (ITO layer) and the organic layer such as the hole transport layer of the current organic electroluminescent device is relatively large, and the barrier to be overcome when the holes are injected from the anode layer to the organic layer is relatively large, thus Leading to weak hole injection ability and low luminous efficiency of organic electroluminescent devices

Method used

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  • Organic electroluminescent component and manufacturing method thereof
  • Organic electroluminescent component and manufacturing method thereof
  • Organic electroluminescent component and manufacturing method thereof

Examples

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preparation example Construction

[0040] see figure 2 , the preparation method of the organic electroluminescent device of an embodiment, comprises the following steps:

[0041] S210 , preparing a hole injection layer 120 on the conductive anode substrate 110 by evaporation using an evaporation technique.

[0042] Wherein, the conductive anode substrate 110 includes a transparent substrate 1102 and an anode layer 1104 prepared on the transparent substrate 1102 . Preferably, the transparent substrate 1102 is glass. The material of the anode layer 1104 is indium tin oxide (ITO). The sheet resistance of the anode layer 1104 is 5˜100Ω / sq.

[0043] Preferably, before preparing the hole injection layer by evaporating the anode layer on the surface of the conductive anode substrate, a step of cleaning the conductive anode substrate is also included. The cleaning step is as follows: the conductive anode substrate is ultrasonically cleaned with detergent, deionized water, acetone, ethanol and isopropanol in sequen...

Embodiment 1

[0069] The structure of the organic electroluminescent device prepared in this embodiment is: ITO / FeF 3 / m-MTDATA / TPBi:Ir(ppy) 3 / Bphen / LiF / Ag; where, the slash " / " indicates a layered structure, and the colon ":" indicates doping, the same below.

[0070] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0071] (1) Wash the ITO glass substrate sequentially with detergent, deionized water, and ultrasonic for 15 minutes to remove organic pollutants on the glass surface. The square resistance of the ITO conductive glass is 5Ω / sq.

[0072] (2) In a vacuum of 1×10 -5In the vacuum coating system of Pa, the hole injection layer is prepared on the surface of the conductive anode ITO by using thermal resistance evaporation technology, and the material is iron trifluoride (FeF 3 ), the thickness is 2nm, and the evaporation rate is 0.01nm / s.

[0073] (3) In a vacuum of 1×10 -5 In Pa's vacuum coating system, the hole transport layer is prep...

Embodiment 2

[0082] The structure of the organic electroluminescent device prepared in this example is: ITO / ReCl 3 / NPB / BCzVBi / TPBi / CsF / Al.

[0083] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0084] (1) Wash the ITO glass substrate sequentially with detergent, deionized water, and ultrasonic for 15 minutes to remove organic pollutants on the glass surface. The square resistance of the ITO conductive glass is 100Ω / sq.

[0085] (2) In a vacuum of 1×10 -3 In the vacuum coating system of Pa, the hole injection layer is prepared on the surface of the conductive anode ITO by thermal resistance evaporation technology, and the material is ruthenium trichloride (ReCl 3 ), the thickness is 15nm, and the evaporation rate is 0.5nm / s.

[0086] (3) In a vacuum of 1×10 -3 In the vacuum coating system of Pa, the hole transport layer is prepared on the surface of the hole injection layer by thermal resistance evaporation technology, the material is NPB,...

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Abstract

An organic electroluminescent component comprises a conductive anode substrate, and a hole injection layer, a hole transmission layer, a luminescent layer, an electron transmission layer and a cathode which are sequentially laminated on an anode layer of the conductive anode substrate, wherein the anode layer is made of indium tin oxide; the hole injection layer is made of iron trifluoride, ruthenium trichloride, osmium trichloride or osmium tetroxide. The luminescent efficiency of the organic electroluminescent component is relatively high. The invention further provides a manufacturing method of the organic electroluminescent component.

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] The luminescence principle of organic electroluminescent devices is based on the action of an external electric field, electrons are injected from the cathode to the lowest unoccupied molecular orbital (LUMO) of organic matter, and holes are injected from the anode to the highest occupied molecular orbital (HOMO) of organic matter. Electrons and holes meet, recombine, and form excitons in the light-emitting layer. Excitons migrate under the action of an electric field, transfer energy to the light-emitting material, and excite electrons to transition from the ground state to the excited state. The excited state energy is deactivated by radiation to generate photons , releasing light energy. [0003] However, the work function difference between the anode layer (I...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/54H01L51/56
CPCH10K71/00H10K50/17H10K2102/00
Inventor 周明杰冯小明钟铁涛王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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