Electronic transport layer ink and preparation method thereof

An electron transport layer and ink technology, applied in inks, household appliances, applications, etc., can solve the problems of difficulty in electrode injection and weak electron transport capability, and achieve enhanced electron injection capability, improved electron injection and transmission capability, and simple process. Effect

Inactive Publication Date: 2019-05-31
SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current water/alcohol-soluble organic conjugated materials have weak

Method used

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  • Electronic transport layer ink and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0026] Example 1

[0027] The preparation method of the electron transport layer ink of this embodiment includes the following steps:

[0028] Provide each component of the electron transport layer ink according to mass fraction; its components include water / alcohol soluble organic conjugated material 0.1%; first doping material 0.01%; second doping material 0.01%; surface tension adjustment Agent 0.1%; viscosity regulator, 0.1%; solvent 99.68%.

[0029] The water / alcohol-soluble organic conjugated material, the first doping material, and the second doping material are added to a solvent to dissolve and mix uniformly to obtain a first solution.

[0030] Add the surface tension modifier and viscosity modifier to the first solution, stir for 0.5-24 hours at a temperature of 0°C-50°C, until the surface tension modifier and viscosity modifier are completely dissolved To obtain a second solution; filter the second solution to obtain an electron transport layer ink. The surface tension re...

Example Embodiment

[0031] Example 2

[0032] The preparation method of the electron transport layer ink of this embodiment includes the following steps:

[0033] Provide each component of the electron transport layer ink according to mass fraction; its components include water / alcohol-soluble organic conjugated material 15%; first doping material 2.5%; second doping material 7.5%; surface tension adjustment Agent 2.5%; viscosity regulator, 2.5%; solvent 70%.

[0034] The water / alcohol-soluble organic conjugated material, the first doping material, and the second doping material are added to a solvent to dissolve and mix uniformly to obtain a first solution.

[0035] Add the surface tension modifier and viscosity modifier to the first solution, stir for 0.5-24 hours at a temperature of 0°C-50°C, until the surface tension modifier and viscosity modifier are completely dissolved To obtain a second solution; filter the second solution to obtain an electron transport layer ink. The surface tension regulato...

Example Embodiment

[0036] Example 3

[0037] The preparation method of the electron transport layer ink of this embodiment includes the following steps:

[0038] Provide each component of the electron transport layer ink according to mass fraction; its components include water / alcohol-soluble organic conjugated material 30%; first doping material 5%; second doping material 15%; surface tension adjustment Agent 5%; viscosity regulator, 5%; solvent 40%.

[0039] The water / alcohol-soluble organic conjugated material, the first doping material, and the second doping material are added to a solvent to dissolve and mix uniformly to obtain a first solution.

[0040] Add the surface tension modifier and viscosity modifier to the first solution, stir for 0.5-24 hours at a temperature of 0°C-50°C, until the surface tension modifier and viscosity modifier are completely dissolved To obtain a second solution; filter the second solution to obtain an electron transport layer ink. The surface tension regulator is ad...

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Abstract

The invention discloses electronic transport layer ink and a preparation method thereof. The electronic transport layer ink comprises the following components in percentage by mass: 0.1-30% of a water/alcohol soluble organic conjugated material; 0.01-5% of a first doping material; 0.01-15% of a second doping material; 0.1-5% of a surface tension regulator; 0.1-5% of a viscosity regulator; and 40-99.68% of a solvent. According to the electron transport layer ink and the preparation method thereof, by taking the water/alcohol soluble organic conjugate material as a main electron transport material and taking an alkali metal compound as the first doping material, an n-type doping effect is formed, approximate ohmic contact is caused at a cathode interface, electron injection capability is enhanced, mutual dissolution with a luminescent layer material can be avoided, electron injection and transmission capability are improved at the same time, so that full-solution luminescent devices arefavorably manufactured.

Description

technical field [0001] The invention relates to the fields of displays and the like, in particular to an electron transport layer ink and a preparation method thereof. Background technique [0002] Organic light-emitting diodes (OLEDs) are considered to be the most promising next-generation technology due to their own outstanding advantages such as self-illumination, high contrast, wide color gamut, large viewing angle, fast response speed, and flexible display. A new generation of flat panel display technology. At present, OLED products that have been commercialized are mainly prepared by high-vacuum thermal evaporation method, which faces the disadvantages of complex equipment and process, high energy consumption, large waste of materials, and high cost. Printed display technology provides an effective way to prepare high-performance OLED products at low cost. Among them, the inkjet printing technology greatly improves the material utilization rate by dropping the config...

Claims

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Application Information

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IPC IPC(8): C09D11/38C09D11/36C09D11/30
Inventor 王士攀史婷张育楠
Owner SHENZHEN CHINA STAR OPTOELECTRONICS SEMICON DISPLAY TECH CO LTD
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