Organic light-emitting diode device and manufacturing method thereof

An electroluminescent device and organic technology, which can be used in the manufacture of organic semiconductor devices, electric solid state devices, semiconductor/solid state devices, etc., and can solve problems such as low lumen efficiency

Inactive Publication Date: 2014-10-01
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

However, traditional organic electroluminescent devices suffer from low lumen efficiency

Method used

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  • Organic light-emitting diode device and manufacturing method thereof
  • Organic light-emitting diode device and manufacturing method thereof
  • Organic light-emitting diode device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0046] Such as figure 2 Shown, the preparation method of the organic electroluminescent device of one embodiment, comprises the following steps:

[0047] Step S210: sequentially vacuum-evaporating a hole injection layer, a hole transport layer, a green light emitting layer, an electron transport layer, and an electron injection layer on the glass substrate.

[0048] Preferably, before forming the hole injection layer by vacuum evaporation on the glass substrate, a step of cleaning the glass substrate is also included: cleaning the glass substrate sequentially with detergent, deionized water, acetone and ethanol ultrasonically, and then drying. In a specific embodiment, wash for 5 minutes each time, stop for 5 minutes, repeat 3 times respectively, and then dry in an oven.

[0049] Preferably, the step of activating the surface of the glass substrate is further included after cleaning the glass substrate and before forming the hole injection layer by vacuum evaporation on the ...

Embodiment 1

[0063] The structure of the organic electroluminescent device of the present embodiment is: ITO / NPB:MoO 3 / NPB / TCTA:Ir(ppy) 3 / Bphen / Bphen:LiF:Li 2 SO 4 / Al / Nb 2 o 5 :V 2 o 5 / Mg:Ag / IZO.

[0064] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0065] (1) Clean the ITO glass substrate sequentially with detergent, deionized water, acetone and ethanol ultrasonically, wash for 5 minutes each time, stop for 5 minutes, repeat 3 times respectively, then dry in an oven, and dry the dried glass The substrate is subjected to surface activation treatment; wherein, the thickness of the ITO glass substrate is 100 nanometers.

[0066] (2) Hole injection layer, hole transport layer, green light-emitting layer, electron transport layer and electron injection layer are formed by vacuum evaporation on the glass substrate in sequence: the material of the hole injection layer is molybdenum trioxide (MoO 3 ) doped N,N′-diphenyl-N,N′-bis(1-napht...

Embodiment 2

[0070] The structure of the organic electroluminescent device of the present embodiment is: ITO / TCTA:WO 3 / TCTA / mCP:Ir(ppy) 2 (acac) / BCP / BCP:LiN 3 :Na 2 SO 4 / Ni / Ta 2 o 5 :V 2 o 5 / Al:Li / ITO.

[0071] The preparation of the organic electroluminescent device of this embodiment is as follows:

[0072] (1) Clean the ITO glass substrate sequentially with detergent, deionized water, acetone and ethanol ultrasonically, wash for 5 minutes each time, stop for 5 minutes, repeat 3 times respectively, then dry in an oven, and dry the dried glass The substrate is subjected to surface activation treatment; wherein, the thickness of the ITO glass substrate is 100 nanometers.

[0073] (2) Hole injection layer, hole transport layer, green light-emitting layer, electron transport layer and electron injection layer are formed by vacuum evaporation on the glass substrate in sequence: the material of the hole injection layer is tungsten trioxide (WO 3 ) doped 4,4′,4″-tris(carbazol-9-yl)...

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PUM

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Abstract

An organic light-emitting diode device comprises a glass substrate, a hole injection layer, a hole transmission layer, a green light-emitting layer, an electron transmission layer, an electron injection layer and a cathode layer which are sequentially stacked, wherein the cathode layer comprises a metal layer, a metal oxide mixed layer, a metal doped layer and a transparent conductive layer which are sequentially stacked. The metal layer is stacked on the electron injection layer and made from aluminum, nickel, gold or silver, the metal oxide mixed layer is made from a mixture formed by mixing, by same mass, two of neodymium pentoxide, vanadium pentoxide and tantalum pentoxide, the metal doped layer is made from silver doped magnesium or lithium doped aluminum, and the transparent conductive layer is made from an indium-tin oxide, an aluminum-zinc oxide or an indium-zinc oxide. The organic light-emitting diode device has high luminous efficiency. In addition, the invention further relates to a manufacturing method of the organic light-emitting diode device.

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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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/54H01L51/56
CPCH10K50/82H10K50/828H10K2102/00H10K2102/101H10K2102/102H10K2102/103H10K71/00
Inventor 周明杰王平钟铁涛陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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