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Organic electroluminescence device 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., can solve the problems of difficulty in finding and designing hole blocking materials, and achieve easy operation and improve luminous efficiency. , the effect of low raw material prices

Inactive Publication Date: 2014-07-16
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

In practical applications, it is difficult to find and design such effective hole-blocking materials

Method used

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  • Organic electroluminescence device and manufacturing method thereof
  • Organic electroluminescence device and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] A method for preparing an organic electroluminescent device, comprising the following steps:

[0047] (1) The conductive anode 1 is made of indium tin oxide glass (ITO). First, the conductive anode 1 is subjected to photolithography treatment, and then cut into 2×2cm 2 The square conductive anode of the glass is ultrasonically cleaned with detergent, deionized water, acetone, ethanol, and isopropanol for 15 minutes each to remove organic pollutants on the glass surface, cleaned and air-dried; Hole injection layer 2, hole transport layer 3, light emitting layer 4; wherein the material of the hole injection layer is WO 3 , the thickness is 50nm, and the pressure used in evaporation is 5×10 -3 Pa, the evaporation rate is 1nm / s; the material of the hole transport layer is TCTA, the thickness is 40nm, and the pressure used in the evaporation is 5×10 -3 Pa, the evaporation rate is 0.1nm / s; the material of the light-emitting layer is ADN, the thickness is 10nm, and the press...

Embodiment 2

[0053] A method for preparing an organic electroluminescent device, comprising the following steps:

[0054] (1) The conductive anode is made of aluminum-doped zinc oxide glass (AZO). First, the conductive anode is photolithographically processed, and then cut into 2×2cm 2 The square conductive anode of the glass is ultrasonically cleaned with detergent, deionized water, acetone, ethanol, and isopropanol for 15 minutes each to remove organic pollutants on the glass surface, cleaned and air-dried; then holes are sequentially evaporated on the conductive anode Injection layer, hole transport layer, light emitting layer. Wherein, the material of the hole injection layer is V 2 o 5 , the thickness is 80nm, and the pressure used in evaporation is 2×10 -3 Pa, the evaporation rate is 5nm / s; the material of the hole transport layer is TAPC, the thickness is 60nm, and the pressure used in the evaporation is 2×10 -3 Pa, the evaporation rate is 0.5nm / s; the material of the light-emit...

Embodiment 3

[0060] A method for preparing an organic electroluminescent device, comprising the following steps:

[0061] (1) The conductive anode is made of indium-doped zinc oxide glass (IZO). First, the conductive anode is photolithographically processed, and then cut into 2×2cm 2 The square conductive anode of the glass is ultrasonically cleaned with detergent, deionized water, acetone, ethanol, and isopropanol for 15 minutes each to remove organic pollutants on the glass surface, cleaned and air-dried; then holes are sequentially evaporated on the conductive anode Injection layer, hole transport layer, light emitting layer. Wherein, the material of the hole injection layer is MoO 3 , the thickness is 40nm, and the pressure used in evaporation is 5×10 -4 Pa, the evaporation rate is 3nm / s; the material of the hole transport layer is TCTA, the thickness is 45nm, and the pressure used in the evaporation is 5×10 -4 Pa, the evaporation rate is 0.3nm / s; the material of the light-emitting ...

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Abstract

The invention discloses an organic electroluminescence device which comprises a conductive anode, a hole injection layer, a hole transmission layer, a light emitting layer, a hole blocking layer, an electron transmission layer, an electron injection layer and a cathode which are stacked sequentially, wherein the hole blocking layer is made of a hybrid material formed by metallic oxide and a fullerene derivative, the metallic oxide is molybdenum trioxide, or nickel oxide, or tungsten trioxide or vanadium pentoxide, and the fullerene derivative is C60, or C70, or 6,6-phenyl-C61-methyl butyrate or 6,6-phenyl-C71-methyl butyrate. Due to the fact that the hybrid material formed by the metallic oxide and the fullerene derivative is adopted to make the hole blocking layer, holes can be well blocked, the situation that light emitting efficiency is affected due to the composition of holes in the electron transmission layer is avoided, electron transmission is facilitated, and the light emitting efficiency of the device is improved.

Description

technical field [0001] The invention relates to the field of organic electroluminescence, in particular to an organic electroluminescence device and a preparation method thereof. Background technique [0002] Organic light-emitting devices (Organic light-emitting devices, referred to as OLEDs) is a multi-layer light-emitting device using organic light-emitting materials, including sequentially stacked anode layer, hole injection layer, hole transport layer, light-emitting layer, electron transport layer layer and cathode. The luminescent principle of OLED 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 orbital (HOMO) of organic matter. The light-emitting layers meet, recombine, and form excitons. The excitons migrate under the action of the electric field and transfer energy to the light-emitting mat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/56
CPCH10K85/211H10K50/18H10K2102/00H10K71/00
Inventor 周明杰王平黄辉陈吉星
Owner OCEANS KING LIGHTING SCI&TECH CO LTD
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