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Silver nanowire composite transparent conductive film and preparation method thereof

A transparent conductive film, silver nanowire technology, applied in the direction of equipment for manufacturing conductive/semiconductive layer, cable/conductor manufacturing, conductive layer on insulating carrier, etc., can solve the problem of short life and film resistivity. The level of the ITO film and the inability of the substrate material to form good adhesion can improve the conductivity and oxidation resistance.

Active Publication Date: 2018-05-29
ZHEJIANG OCEAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the ultrasonic spray method for preparing zinc oxide thin films has the advantage of being easy to prepare large-area thin films, but its disadvantage is that the resistivity of the prepared thin films cannot reach the level of ITO thin films; for silver nanowire thin films, its advantages are excellent electrical properties, It is easy to prepare large-area thin films; its disadvantages are that it cannot form good adhesion with the substrate material and has short lifespan. In order to overcome the above shortcomings, people usually use silver nanowire composite films to improve film performance
For example, the patent application CN106229037A discloses a method for preparing a composite transparent conductive film, using a drop coating method to prepare a zinc oxide composite film on the silver nanowire. This method improves the electrical and optical properties of the composite film, but this method also has the disadvantage of being unable to obtain a large-area uniform film. technical flaws

Method used

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  • Silver nanowire composite transparent conductive film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Glass substrate processing

[0026] Choose ultra-clear glass with a diameter of 10mm as the substrate, and use acetone, ethanol, and deionized water to ultrasonicate for 30 minutes, and then clean it with deionized water; use nitrogen to dry the substrate, and dry it in a blast oven at 120°C;

[0027] (2) Preparation of silver nanowire solution

[0028] Utilize ethylene glycol as solvent to reduce silver nitrate by polyalcohol thermal method, obtain silver nanowire solution 30ml, centrifuge separates silver nanowire (0.2g) and solvent, after removing solvent, silver nanowire is dissolved in isopropanol solution , be mixed with the silver nanowire ethanol dispersion liquid of 5mg / ml, five minutes ultrasonic treatment, obtain the silver nanowire solution (concentration 5mg / ml, volume 40ml) of stable dispersion;

[0029] (3) Preparation of silver nanowire film

[0030] The silver nanowire film is prepared by the pulling method, and the silver nanowire film is prepare...

Embodiment 2

[0034] (1) Glass substrate processing

[0035] Choose ultra-clear glass with a diameter of 20mm as the substrate, and use acetone, ethanol, and deionized water to sonicate for 30 minutes, and then clean it with deionized water; use nitrogen to dry the substrate, and dry it in a blast oven at 120°C;

[0036] (2) Preparation of silver nanowire solution

[0037] Utilize ethylene glycol as the polyalcohol thermal reduction silver nitrate of solvent, obtain silver nanowire solution 60ml, centrifuge separates silver nanowire (0.4g) and solvent, after removing solvent, silver nanowire is dissolved in ethanol solution, prepares into a silver nanowire ethanol dispersion of 10 mg / ml, and ultrasonically treat it for five minutes to obtain a stably dispersed silver nanowire solution;

[0038] (3) Preparation of silver nanowire film

[0039] The silver nanowire film is prepared by the pulling method, and the silver nanowire film is prepared by multiple pulling. After the silver nanowire fi...

Embodiment 3

[0043] (1) Glass substrate treatment: choose ultra-clear glass with a diameter of 20mm as the substrate, use acetone, ethanol, and deionized water to ultrasonicate for 30 minutes, and then clean it with deionized water; use nitrogen to dry the substrate, and dry it in a blast drying oven at 120°C Dry; (2) Preparation of silver nanowire solution

[0044] Utilize ethylene glycol as the polyhydric alcohol heat reduction silver nitrate of solvent, obtain silver nanowire solution 90ml, centrifuge separates silver nanowire (0.6g) and solvent, after removing solvent, silver nanowire is dissolved in ethanol and water by pressing A mixed solution with a volume ratio of 8:2 was prepared into a 4 mg / ml ethanol dispersion of silver nanowires, and subjected to ultrasonic treatment for five minutes to obtain a stable dispersed silver nanowire solution.

[0045] (3) Preparation of silver nanowire film

[0046] The silver nanowire film is prepared by the pulling method, and the silver nanowi...

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Abstract

The invention relates to a silver nanowire composite transparent conductive film and a preparation method thereof. The transparent conductive film comprises transparent glasses, a first layer of silver nanowire conductive layer laminated on the glass and a zinc oxide protective layer which covers silver nanowires and is prepared by an ultrasonic spraying method. The transparent conductive film andthe preparation method have the advantages of (1) reducing a growth temperature to 200 DEG C to 260 DEG C, (2) reducing the growth pressure of a reaction chamber to 10pa to 500 pa, and (3) using an inert gas to be a carrier gas to reduce the proportion of oxygen in the reaction chamber to improve the corrosion of the silver nanowires by oxygen at a heating temperature during a zinc oxide growth process. The composite film prepared by the invention has simple process, a zinc oxide film growth process is a crystallization process, an additional annealing process is not needed, the adhesion between the silver nanowires and the glass is improved, the conductive performance and lives of the silver nanowires are improved, and the large-area preparation and industrial production are easy to realize.

Description

technical field [0001] The invention relates to a composite transparent conductive film and a preparation method thereof, in particular to a composite transparent conductive film of silver nanowires and ultrasonically sprayed zinc oxide on a glass substrate and a preparation method thereof, belonging to the field of photoelectric materials. Background technique [0002] In recent years, transparent conductive thin film materials have been widely used in optoelectronic devices, OLEDs and other fields. Transparent conductive films (TCFs, transparent conduction films) refer to films with high transmittance in the ultraviolet-visible-near-infrared region (λ=380-1000nm), excellent electrical conductivity, and square resistance below 10Ω / Sq Material. Transparent conductive films are an important part of many optoelectronic devices, such as Display, Solar cells, Organic Light Emitting Diodes (OLED), Touch panels, etc. Indium tin oxide thin film (ITO) is the main material of curre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01B5/14H01B13/00
CPCH01B5/14H01B13/0026
Inventor 于晓明余璇陈立桥
Owner ZHEJIANG OCEAN UNIV
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