Preparation method of ionic gel stretchable electroluminescent device based on imidazole chloride salt

An electroluminescent device, ion gel technology, applied in the direction of electric solid device, semiconductor/solid-state device manufacturing, electrical components, etc., can solve the problems of poor mechanical stability and insufficient electrical conductivity of light-emitting devices, and achieve low cost and electrical conductivity. Excellent and stable effect

Inactive Publication Date: 2022-03-04
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is: the technical problems of poor mechanical stability and insufficient electrical conductivity of existing light-emitting devices

Method used

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  • Preparation method of ionic gel stretchable electroluminescent device based on imidazole chloride salt
  • Preparation method of ionic gel stretchable electroluminescent device based on imidazole chloride salt
  • Preparation method of ionic gel stretchable electroluminescent device based on imidazole chloride salt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Preparation of ion gels. Dissolve PVA, BA, and EmimCl in distilled water (0.125g / mL, 0.0063g / mL, and 0.05g / mL, respectively), mix and stir the materials, and then ultrasonicate for 30 minutes to remove air bubbles. The reaction was stirred at 90° C. for 1 h, cooled to room temperature, and the ion gel was prepared.

[0032] Take 1g doped Cu 2+ 5g of PDMS was added to ZnS fluorescent powder (doping ratio: 0.01wt%), stirred evenly to form an emulsion, and ultrasonic treatment was performed for 30 minutes to remove air bubbles. Put the emulsion into an oven at 80°C to react for 3 hours, and solidify to obtain the electroluminescent layer

[0033] Use a wire bar coater to use the obtained electroluminescent layer as a substrate, and use the roller coating method to coat the ion gel prepared above on both ends of the substrate respectively, and put the coated device into a refrigerator at -4 °C After 12 hours of reaction, it was taken out and cooled to room temperature. ...

Embodiment 2

[0037] Preparation of ion gels. Dissolve PVA, BA, and EmimCl in distilled water (0.125g / mL, 0.0063g / mL, and 0.05g / mL, respectively), mix and stir the materials, and then ultrasonicate for 30 minutes to remove air bubbles. The reaction was stirred at 80° C. for 1 h, cooled to room temperature, and the ion gel was prepared.

[0038] Take 2g doped Cu 2+ 5g PDMS was added to the ZnS fluorescent powder (doping ratio 0.03wt%), stirred evenly to form an emulsion, and ultrasonic treatment was performed for 30 minutes to remove air bubbles. Put the emulsion into an oven at 80°C to react for 3 hours, and solidify to obtain the electroluminescent layer

[0039] Use a wire bar coater to use the obtained electroluminescent layer as a substrate, and use the roller coating method to coat the ion gel prepared above on both ends of the substrate respectively, and put the coated device into a refrigerator at -4 °C After 12 hours of reaction, it was taken out and cooled to room temperature. ...

Embodiment 3

[0042] Preparation of ion gels. Dissolve PVA, BA, and EmimCl in distilled water (0.15 g / mL, 0.001 g / mL, and 0.08 g / mL, respectively), mix and stir the materials, and then ultrasonicate for 30 min to remove air bubbles. The reaction was stirred at 90° C. for 1 h, cooled to room temperature, and the ion gel was prepared.

[0043] Take 1g doped Cu 2+ 5g PDMS was added to the ZnS fluorescent powder (doping ratio 0.05wt%), stirred evenly to form an emulsion, and ultrasonic treatment was performed for 30 minutes to remove air bubbles. Put the emulsion into an oven at 80° C. to react for 3 hours, and solidify to obtain an electroluminescent layer.

[0044] Use a wire bar coater to use the obtained electroluminescent layer as a substrate, and use the roller coating method to coat the ion gel prepared above on both ends of the substrate, and put the coated device into a refrigerator at -4 °C After 18 hours of reaction, it was taken out and cooled to room temperature.

[0045] Fig...

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Abstract

The invention discloses a preparation method of an ionic gel stretchable electroluminescent device based on imidazole chloride salt, which comprises the following steps: by taking a flexible material and a conductive material as initial raw materials, a cross-linking material as a cross-linking agent and distilled water as a solvent, uniformly mixing and stirring the materials, then carrying out ultrasonic treatment to remove bubbles, carrying out stirring reaction, and then cooling to room temperature, thereby obtaining the ionic gel stretchable electroluminescent device based on imidazole chloride salt. Ionic gel is prepared; taking a luminescent material, adding an elastic material, uniformly stirring to form an emulsion, carrying out ultrasonic treatment to remove bubbles, putting the solution into a drying oven, reacting, and curing to obtain an electroluminescent layer; the ionic gel is used as a matrix, the electroluminescent layer is used as a substrate by using a bar coater, two ends of the substrate are respectively coated with the ionic gel by adopting a roll coating method, and the coated device is put into a refrigerator for reaction. The prepared device is simple in structure, the light-emitting layers at the two ends of the device are tightly combined, the device has stretchability and high conductivity, the performance of the device is effectively improved, and the device can emit light under the excitation voltage of 30 V.

Description

technical field [0001] The invention relates to a stretchable high-conductivity transparent gel, in particular to a preparation method of a stretchable electroluminescent device, which belongs to the field of flexible photoelectric devices. Background technique [0002] Stretchable electroluminescent devices are characterized by good flexibility, high mechanical strength, and high mechanical stability. It is an indispensable part of the future wearable integrated device system, and is widely used in soft smart sensors, flexible light emitting devices and artificial intelligence skin. Most of the stretchable electroluminescent devices that have been manufactured are "sandwich" structures, and their conductive electrodes are mostly conductive materials wrapped by insulating elastomers: carbon nanotubes, silver nano-networks and graphene, etc. Although the prepared devices have high conductivity , but its mechanical stability is poor, the conductive layer is easy to break, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J7/04C08L83/04C08K3/30C09D129/04C09D7/63H01L51/52
CPCC08J7/04C08J2383/04C08J2429/04C08K2003/3036C08K5/3445H10K50/816H10K50/82
Inventor 刘志福张功满
Owner SHANGHAI INST OF TECH
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