Transparent flexible electrode with ordered grid structure and preparation method and application thereof

A flexible electrode and grid structure technology, applied in ohmic resistance electrodes, cable/conductor manufacturing, circuits, etc., can solve the problems of oxidation, electrode performance degradation, electrode material easy to fall off, etc., to achieve extended application methods, simple preparation process, The effect of improving light transmission performance

Pending Publication Date: 2021-09-14
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the metal nanowire electrodes based on random distribution have great disadvantages, that is, the resistance on the same electrode is not uniform, or the electrical properties of different batches of electrodes are quite different, so that the heater performance is unstable.
In addition, if the metal nanowires are simply attached to the surface of the flexible substrate, the electrode material is easy to fall off and easily oxidized in the air, resulting in rapid degradation of electrode performance.

Method used

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  • Transparent flexible electrode with ordered grid structure and preparation method and application thereof
  • Transparent flexible electrode with ordered grid structure and preparation method and application thereof
  • Transparent flexible electrode with ordered grid structure and preparation method and application thereof

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preparation example Construction

[0040] One or more embodiments of the present invention also provide a method for preparing a transparent flexible electrode based on an ordered ring structure of metal nanowires embedded in a PET substrate. The preparation method includes the following steps: Spray the silver nanowire solution, self-assemble after the silver nanowire solution is dried to obtain an ordered ring structure, then spin coat a layer of PET solution, heat to solidify the PET, and peel off the PET film and PTFE film after cooling to obtain the transparent flexible electrodes.

[0041] The silver nanowire solution is an aqueous solution containing silver nanowires, an organic solution or a mixture of water and an organic solution; preferably, the organic solution is an ethanol or methanol solution containing silver nanowires.

[0042] The concentration of the silver-containing nanowire solution is 0.001-10 mg / ml;

[0043] The silver-containing nanowire solution is sprayed on the surface of the PTFE f...

Embodiment 1

[0052] This embodiment provides a transparent flexible electrode based on an ordered ring structure metal nanowire embedded in a PET substrate. The preparation method of the transparent flexible electrode includes:

[0053] Step 1: Select silver nanowires with a diameter and length of 30nm and 20um respectively and add them into ethanol to form an AgNWs solution with a concentration of 0.5mg / ml. Add the AgNWs solution to the spray gun. The nozzle diameter is 0.3mm, and the spray distance is 7cm;

[0054] Step 2: Spray nano-silver solution on the surface of PTFE film, and self-assemble to obtain an ordered ring structure after the nano-silver is dried;

[0055] Step 3: Dissolve 1.5g of PET particles in 6ml of trifluoroacetic acid (TFA) and 12ml of dichloromethane (DCM), add 4wt% transparent agent, and stir at 300rpm at room temperature for 2h to form a PET solution.

[0056] Step 4: Put the PTFE film on the glue homogenizer, spin coat a layer of PET solution at a speed of 200r...

Embodiment 2

[0064] This embodiment provides a transparent flexible electrode based on an ordered ring structure metal nanowire embedded in a PET substrate. The preparation method of the transparent flexible electrode includes:

[0065] Step 1: Select silver nanowires with a diameter and length of 40nm and 50um respectively and add them to ethanol to form an AgNWs solution with a concentration of 0.3mg / ml. Add the AgNWs solution to the spray gun. The nozzle diameter is 0.4mm, and the spray distance is 8cm;

[0066] Step 2: Spray nano-silver solution on the surface of PTFE film, and self-assemble to obtain an ordered ring structure after the nano-silver is dried;

[0067] Step 3: Dissolve 2g of PET particles in 6ml of trifluoroacetic acid (TFA) and 12ml of dichloromethane (DCM), add 4wt% transparent agent, and stir at 300rpm at room temperature for 2h to form a PET solution.

[0068] Step 4: Put the PTFE film on the glue homogenizer, spin coat a layer of PET solution at a speed of 200rpm, ...

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Abstract

The invention discloses a transparent flexible electrode with an ordered grid structure and a preparation method and application thereof, the transparent flexible electrode comprises a flexible substrate and a metal nanowire embedded in the substrate, and the metal nanowire is of an ordered annular structure. The technical problems that in the prior art, a flexible transparent electrode is poor in light transmission, poor in sheet resistance uniformity and complex in preparation process are solved, and the flexible transparent electrode is used for the transparent flexible heater.

Description

technical field [0001] The invention belongs to the technical field of transparent flexible electrodes, and in particular relates to a transparent flexible electrode with an ordered grid structure, a preparation method thereof and an application in a transparent flexible heater. Background technique [0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art. [0003] Flexible transparent conductive electrodes have attracted extensive attention as key components of various flexible optoelectronic devices, such as organic light-emitting diodes, organic solar cells, touch screens, and smart windows. Indium tin oxide (ITO) is the most commonly used commercial transparent conductive electrode, which has high conductivity and optical transparency; however, because of its inherent brittleness, it requires a high-temperature manufacturing process, and the cost problem caused by the scarc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/16H01B5/00H01B13/00H05B3/03
CPCH01B5/16H01B5/00H01B13/00H05B3/03
Inventor 钱凯徐瑞雪孙博文
Owner SHANDONG UNIV
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