Method for preparing silver nanowire-titanium dioxide composite transparent electrode and transparent electrode

A technology of silver nanowires and titanium dioxide, applied in the field of optoelectronics, can solve the problems of many process steps, poor uniformity of large area, etc., and achieve the effects of simple process, excellent electrical conductivity and transmittance, and excellent thermal and chemical stability.

Inactive Publication Date: 2016-10-26
ZHEJIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method faces two problems: first, the silver nanowire network is prepared by the traditional spin-coating method, and the large-area uniformity is not good; second, the titanium dioxide sol-gel is spin-coated on the silver nanow

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  • Method for preparing silver nanowire-titanium dioxide composite transparent electrode and transparent electrode
  • Method for preparing silver nanowire-titanium dioxide composite transparent electrode and transparent electrode
  • Method for preparing silver nanowire-titanium dioxide composite transparent electrode and transparent electrode

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Embodiment 1

[0029] What this embodiment shows is the silver nanowire-titanium dioxide composite transparent electrode prepared on the non-flexible transparent glass substrate, and its preparation method comprises the following steps:

[0030] (1) Preparation of silver nanowire-titanium dioxide sol-gel

[0031] Take an appropriate amount of silver nanowire-ethanol suspension, wherein the concentration of silver nanowires is 2.5 mg / mL (those skilled in the art can also use other concentrations in the range of 2-4 mg / mL), and add tetraisopropyl alcohol in a certain volume ratio Titanium alkoxide and ethanolamine, vibrate until the silver nanowires are evenly dispersed therein, forming silver nanowires-titanium dioxide sol-gel, wherein the volume ratio of silver nanowires-ethanol suspension, titanium tetraisopropoxide, and ethanolamine is 8:1:0.1 (Those skilled in the art can also adopt other volume ratios in the range of 5:1:1-10:1:0.01);

[0032] (2) Prepare the transparent substrate

[0...

Embodiment 2

[0040] What this embodiment shows is the silver nanowire-titanium dioxide composite transparent electrode prepared on the flexible transparent polyethylene substrate, and its preparation method comprises the following steps:

[0041] (1) Preparation of silver nanowire-titanium dioxide sol-gel

[0042] Take an appropriate amount of silver nanowire-ethanol suspension, wherein the concentration of silver nanowires is 2.5 mg / mL (those skilled in the art can also use other concentrations in the range of 2-4 mg / mL), and add tetraisopropyl alcohol in a certain volume ratio Titanium alkoxide and ethanolamine, vibrate until the silver nanowires are evenly dispersed therein, forming silver nanowires-titanium dioxide sol-gel, wherein the volume ratio of silver nanowires-ethanol suspension, titanium tetraisopropoxide, and ethanolamine is 8:1:0.1 (Those skilled in the art can also adopt other volume ratios in the range of 5:1:1-10:1:0.01);

[0043] (2) Prepare the transparent substrate

[...

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Abstract

The invention discloses a method for preparing a silver nanowire-titanium dioxide composite transparent electrode and a transparent electrode. The method comprises the steps of: taking silver nanowire-ethyl alcohol suspension, adding titanium tetraisopropoxide and ethanolamine into the suspension, shaking until silver nanowires are uniformly dispersed in the suspension, and forming silver nanowire-titanium dioxide sol gel; uniformly spin-coating the sol gel on a transparent substrate to form a silver nanowire-titanium dioxide sol gel thin film; and heating the transparent substrate spin-coated with the gel thin film, and until solution on the surface of the transparent substrate is volatilized and titanium dioxide sol gel is decomposed into titanium dioxide, cooling to the room temperature so as to form a random silver nanowire network completely coated with the titanium dioxide thin film. The transparent electrode not only has excellent electrical conductivity, transmittance and mechanical property, but also has excellent thermal and chemical stability due to coating of titanium dioxide; the method is unrelated to the substrate area, the substrate surface appearance and substrate flexibility, and is simple in process, high in repeatability and reliability and suitable for large-area batch production.

Description

technical field [0001] The invention belongs to the technical field of optoelectronics, and in particular relates to a method for preparing a silver nanowire-titanium dioxide composite transparent electrode and a silver nanowire-titanium dioxide composite transparent electrode. Background technique [0002] Transparent electrodes are thin-film materials with high conductivity and high visible light transmittance, and are key components of many optoelectronic devices (such as solar cells, light-emitting diodes, touch screens, liquid crystal displays, etc.). Currently, tin-doped indium oxide (ITO) dominates the transparent electrode market due to its high conductivity and high transmittance. However, ITO contains the scarce element indium, and with the development of the optoelectronics industry, the demand for transparent electrodes is increasing, the reserves of indium continue to decline, and the price of ITO continues to rise. Other metal oxide semiconductors, such as zin...

Claims

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Application Information

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IPC IPC(8): H01B13/00H01B5/14H01B5/16B82Y30/00B82Y40/00
CPCH01B13/00B82Y30/00B82Y40/00H01B5/14H01B5/16
Inventor 杨柳袁浩寇鹏飞何赛灵
Owner ZHEJIANG UNIV
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