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Organic light emitting device and preparation method thereof

An electroluminescence device and a luminescence technology, applied in the direction of electric solid-state devices, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of total reflection loss and low light extraction performance, achieve enhanced light scattering, and increase transmission rate , Improve the effect of injection ability

Inactive Publication Date: 2015-03-25
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

Specifically, when the refractive index of the glass of the existing light-emitting device is 1.5, and the ITO is 1.8, total reflection will occur when light reaches the glass from ITO, causing the loss of total reflection, resulting in lower overall light extraction performance

Method used

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  • Organic light emitting device and preparation method thereof
  • Organic light emitting device and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038] Such as figure 1 As shown, the organic electroluminescent device in this embodiment has a layered structure, and each layer is in turn: a glass substrate 101, an anode layer 102, a ternary doped layer 103, a hole injection layer 104, a hole transport layer 105, The light emitting layer 106 , the electron transport layer 107 , the electron injection layer 108 and the cathode layer 109 . The ternary doped layer 103 constitutes the heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / ITO / UGH2:MgF 2 :F4-TCNQ / WO 3 / NPB / BCzVBi / TAZ / CsF / Ag, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping.

[0039] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0040] (1) Coating pretreatment

[0041] Take out the glass substrate 101 whose glass grade is N-LASF44, rinse it with distilled water and ethanol, and soak it in isopropanol for...

Embodiment 2

[0050] The organic electroluminescent device in this embodiment has a layered structure, and each layer is in turn: glass substrate, anode layer, ternary doped layer, hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer and cathode layer. Said and said ternary doped layer constitute said heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / IZO / UGH1:MgO:1T-NATA / MoO 3 / TCTA / ADN / TPBi / CsN 3 / Al, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping.

[0051] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0052] (1) Coating pretreatment

[0053] Take out the glass substrate whose glass grade is N-LAF36, rinse it with distilled water and ethanol, and soak it in isopropanol for one night.

[0054] (2) Preparation of the anode layer

[0055] Place the glass substrate ...

Embodiment 3

[0061] The organic electroluminescent device in this embodiment has a layered structure, and each layer is in turn: glass substrate, anode layer, ternary doped layer, hole injection layer, hole transport layer, light emitting layer, electron transport layer, electron injection layer and cathode layer. Said and said ternary doped layer constitute said heat dissipation layer. The structure of the organic electroluminescent device is glass substrate / AZO / UGH3:MgS:2T-NATA / V 2 o 5 / TAPC / Alq 3 / Bphen / LiF / Al, where the slash " / " indicates a layered structure, and the colon ":" indicates mutual doping.

[0062] The above-mentioned organic electroluminescent device is prepared according to the following steps in sequence:

[0063] (1) Coating pretreatment

[0064] Take out the glass substrate whose glass grade is N-LASF31A, rinse it with distilled water and ethanol, and soak it in isopropanol for one night.

[0065] (2) Preparation of the anode layer

[0066] Place the glass subs...

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Abstract

The invention relates to an organic light emitting device and a preparation method thereof. The organic light emitting device is of a layered structure comprising a glass substrate, an anode layer, a scattering layer, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode layer, all of which are sequentially stacked. The scattering layer includes a three-element doped layer which contains organic silicon small molecules, a magnesium compound and a hole doped object material. The scattering layer of the organic light emitting device of the invention improves the hole injection ability, avoids the phenomenon that electrons reach the anode and are composited with holes to generate leakage current, enhances light scattering, increases the hole transport rate, and thus improves the light extraction efficiency.

Description

technical field [0001] The invention relates to the field of optoelectronic devices, in particular to an organic electroluminescent device. The invention also relates to a preparation method of the organic electroluminescent device. Background technique [0002] In 1987, C.W.Tang and Van Slyke of Eastman Kodak Company in the United States reported a breakthrough in the research of organic electroluminescence. A high-brightness, high-efficiency double-layer organic electroluminescent device (OLED) has been prepared using ultra-thin film technology. Brightness up to 1000cd / m at 10V 2 , its luminous efficiency is 1.51lm / W, and its lifespan is more than 100 hours. [0003] In existing light-emitting devices, only about 18% of the light inside the device can be emitted to the outside, while the rest will be consumed outside the device in other forms, and there is a difference in refractive index between the interfaces (such as between glass and ITO difference in the refractiv...

Claims

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Application Information

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IPC IPC(8): H01L51/52H01L51/54H01L51/56
CPCH10K30/865H10K50/854H10K71/00
Inventor 周明杰黄辉陈吉星王平
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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