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Organic electroluminescent device and manufacturing method thereof

An electroluminescence device and a luminescence technology, which are applied in the manufacture of organic semiconductor devices, electric solid state devices, and semiconductor/solid state devices, can solve the problems of low luminous efficiency

Inactive Publication Date: 2014-02-12
OCEANS KING LIGHTING SCI&TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the luminous efficiency of traditional organic electroluminescent devices is low

Method used

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  • Organic electroluminescent device and manufacturing method thereof
  • Organic electroluminescent device and manufacturing method thereof
  • Organic electroluminescent device and manufacturing method thereof

Examples

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preparation example Construction

[0042] Such as figure 2 As shown, a method for preparing an organic electroluminescent device 100 in one embodiment includes the following steps:

[0043] Step S210 : cleaning the anode substrate 110 . In a specific embodiment, the cleaning step of the anode substrate 110 includes: firstly cleaning the anode substrate 110 in ultrasonic waves for 5 minutes with detergent, then cleaning in ultrasonic waves with deionized water for 5 minutes, then cleaning in ultrasonic waves with acetone for 5 minutes, and finally Use ethanol to clean in ultrasonic for 5 minutes, and stop for 5 minutes after each cleaning; wash three times according to the above sequence, and dry the cleaned anode substrate 110 to obtain a clean anode substrate 110 . Dust and organic matter on the surface of the anode substrate 110 are removed through the above cleaning.

[0044] Wherein, after the anode substrate 110 is cleaned, a surface activation treatment step for the anode substrate 110 is also included...

Embodiment 1

[0061] The structure of the organic electroluminescent device of the present embodiment is: ITO / NPB:MoO 3 / NPB / TPBI:Ir(ppy) 3 / Bphen:Li 2 CO 3 / Bphen:Li 3 N:Li 2 CO 3 / Ag.

[0062] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0063] (1) Cleaning the ITO anode substrate: First, use detergent to clean in ultrasonic for 5 minutes, then use deionized water to clean in ultrasonic for 5 minutes, then use acetone to clean in ultrasonic for 5 minutes, and finally use ethanol to clean in ultrasonic for 5 minutes Minutes, stop for 5 minutes after each cleaning; wash three times according to the above sequence, and dry the cleaned ITO anode substrate to obtain a clean ITO anode substrate; treat the cleaned ITO anode substrate with UV-OZONE for 30 minutes. The thickness of the ITO anode substrate is 100 nm.

[0064] (2) Vacuum evaporation on the ITO anode substrate to form a hole injection layer, wherein the material of the hole inje...

Embodiment 2

[0072] The structure of the organic electroluminescent device of the present embodiment is: FTO / TCTA:WO 3 / TCTA / TPBI:Ir(ppy) 3 / BCP:Na 2 CO 3 / BCP:CsF:Na 2 CO 3 / Al.

[0073] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0074] (1) Cleaning the FTO anode substrate: First, use detergent to clean in ultrasonic for 5 minutes, then use deionized water to clean in ultrasonic for 5 minutes, then use acetone to clean in ultrasonic for 5 minutes, and finally use ethanol to clean in ultrasonic for 5 minutes Minutes, stop for 5 minutes after each cleaning; wash three times according to the above sequence, and dry the cleaned FTO anode substrate to obtain a clean FTO anode substrate; treat the cleaned FTO anode substrate with UV-OZONE for 30 minutes. The thickness of the FTO anode substrate is 150 nm.

[0075] (2) Vacuum evaporation on the FTO anode substrate to form a hole injection layer, wherein the material of the hole injection l...

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Abstract

An organic electroluminescent device comprises an anode substrate, a hole injection layer, a hole transmission layer, a luminous layer, an electron transmission layer, an electron injection layer and a cathode layer, wherein the anode substrate, the hole injection layer, the hole transmission layer, the luminous layer, the electron transmission layer, the electron injection layer and the cathode layer are stacked up in sequence. The materials of the electron transmission layer include an electron transmission material and first alkali carbonate doped in the electron transmission material, the doped mass percent concentration of the first alkali carbonate is 3%-8%. The materials of the electron injection layer include a main material, an n-type material and second alkali carbonate, the n-type material and the second alkali carbonate are jointly doped in the main material, and the doped mass percent concentration of the second alkali carbonate is 5%-10%. The first alkali carbonate and the second alkali carbonate are respectively selected from one of lithium carbonate, sodium carbonate, potassium carbonate, rubidium carbonate and cesium carbonate. The organic electroluminescent device is higher in luminous efficiency. In addition, a manufacturing method for the organic electroluminescent device is further provided.

Description

technical field [0001] The invention relates to the field of electronic devices, in particular to an organic electroluminescent device and a preparation method thereof. Background technique [0002] Organic electroluminescent devices (OLEDs) have some unique advantages: (1) OLEDs are diffuse surface light sources, and do not require an additional light guide system to obtain large-area white light sources like light-emitting diodes (LEDs); (2) Due to the diversity of organic light-emitting materials, OLED lighting can design the required color of light according to needs. At present, both small molecule OLEDs and polymer organic light-emitting diodes (PLEDs) have obtained all colors of light including the white light spectrum. ; (3) OLED can be made on a variety of substrates such as glass, ceramics, metal, plastic and other materials, which makes the design of lighting sources more free; (4) OLED lighting panels can be made in the way of making OLED displays. (5) OLED can ...

Claims

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Application Information

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IPC IPC(8): H01L51/50H01L51/54
CPCH10K85/111H10K50/165H10K50/171H10K2102/00H10K71/00
Inventor 周明杰王平钟铁涛陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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