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Preparation method of glass substrate graphene/silver nano wire transparent conductive film

A transparent conductive film and silver nanowire technology, applied in the chemical field, can solve the problems of high cost, rising indium price, expensive ITO materials, etc., achieve high uniformity and stability, improve conductivity, and avoid cumbersome effects

Inactive Publication Date: 2015-09-23
林州市清华·红旗渠新材料产业化发展中心
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are also some disadvantages in the use of ITO, including: (1) the price of indium continues to rise, making ITO an increasingly expensive material
(2) The brittle nature of ITO makes it unable to meet the performance requirements of some new applications (such as bendable LCD organic solar cells)
(3) ITO preparation methods (such as sputtering, evaporation, pulse, laser deposition, electroplating) are expensive

Method used

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  • Preparation method of glass substrate graphene/silver nano wire transparent conductive film

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Experimental program
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Effect test

Embodiment 1

[0014] (1) The expanded graphite is prepared by the Hummers method to obtain an aqueous graphite oxide solution. Obtained stable dispersed graphene oxide colloid (2mg / ml) through ultrasonic treatment for 25min;

[0015] (2) Mix the same volume (10ml) and concentration (0.1M) of sodium citrate and silver nitrate aqueous solution in a single-necked flask, and then add 162ml of graphene oxide (GO) and 10ml of N-N dimethylacetamide. Use a magnetic stirrer to react at room temperature in the dark for 12 h. Raise the temperature to 130°C for 3h. Then add 3.24g of sodium citrate, adjust the pH to ≈12 with ammonia water, and keep the temperature down to 95°C for 6 hours. Wash the product by centrifugation with ethanol, prepare a 1 mg / ml silver nanowire / graphene hybrid solution and store it in a jar as a precursor for later use;

[0016] (3) Choose a glass sheet with a side length of 2cm and a thickness of 2.5mm and soak it in a solution of concentrated sulfuric acid (98%):hydrogen ...

Embodiment 2

[0020](1) The expanded graphite is prepared by the Hummers method to obtain an aqueous graphite oxide solution. After 27min of ultrasonic treatment, a stable dispersed graphene oxide colloid (2.5mg / ml) was obtained;

[0021] (2) Mix equal volume (12ml); equal concentration (0.2M) of sodium citrate and silver nitrate aqueous solution in a single-necked flask, then add 312ml of graphene oxide (GO) aqueous solution and 12ml of N-N dimethyl ethyl ether Amide solution. Use a magnetic stirrer to react at room temperature in the dark for 12 h. Raise the temperature to 130°C for 3h. Then add 7.8g of sodium citrate, adjust the pH of the solution to ≈12 with ammonia water, and lower the temperature to 95°C for 6 hours. The product was centrifuged and washed with ethanol, and a 1.2 mg / ml silver nanowire / graphene hybrid solution was prepared in a jar. As a precursor for later use;

[0022] (3) Choose a glass piece with a side length of 2.5cm and a thickness of 2.5mm and soak it in a ...

Embodiment 3

[0026] (1) Prepare graphite oxide aqueous solution by Hummers method. After 29min of ultrasonic treatment, a stable dispersed graphene oxide colloid (3mg / ml) was obtained;

[0027] (2) Mix an equal volume (12ml) and an equal concentration (0.3M) of sodium citrate and silver nitrate aqueous solution in a single-necked flask, then add 390ml of graphene oxide (GO) aqueous solution and 12ml of N-N dimethyl ethyl ether Amide solution. Use a magnetic stirrer to react at room temperature in the dark for 12 h. The temperature was raised to 130°C for 3 hours. Then add 11.66g of sodium citrate, adjust the pH of the solution to ≈12 with ammonia water, and lower the temperature to 95°C for 6 hours. The product was centrifuged and washed with ethanol, and a 1.2 mg / ml silver nanowire / graphene hybrid solution was prepared in a jar. As a precursor for later use;

[0028] (3) Choose a glass sheet with a side length of 3cm and a thickness of 2.5mm and soak it in a solution of concentrated ...

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Abstract

The invention discloses a preparation method of a glass substrate graphene / silver nano wire transparent conductive film, and belongs to the field of chemistry. The method comprises the following steps: A, preparing a stable and dispersive oxidized graphene colloid aqueous solution by use of graphite; B, preparing a 1-1.5mg / ml silver nano wire / graphene hybrid aqueous solution as a precursor for later use; C, processing a glass piece; D, manufacturing the silver nano wire / graphne transparent conductive film on the glass piece; and E, performing post treatment. According to the invention, one-dimensional silver nano wires are assembled on a graphene sheet layer through a simple hot pot method, the advantages of the fiber structures of the nano wires can be brought into full play, a good conductive network can be formed in a carrier of a graphene film, and the conductivity of the graphene film can be improved.

Description

technical field [0001] The invention relates to a method for preparing a transparent conductive film, in particular to a method for preparing a glass substrate graphene / silver nanowire transparent conductive film, and belongs to the field of chemistry. Background technique [0002] Transparent conductive films (TCFs, transparent conducting films) have high light transmittance (Tavg>80%) in the visible light region (λ=380~780nm), and have excellent electrical conductivity, and the resistivity can reach 10 -5 Thin film materials below Ω·m. Transparent conductive films are important components of many optoelectronic devices, such as liquid crystal displays (LCDs), organic solar cells, organic light-emitting diodes (OLEDs), smart windows, etc. Indium tin oxide (ITO) has become the main material for transparent conductive films due to its high electrical conductivity and high light transmittance. However, there are also some disadvantages in the use of ITO, including: (1) Th...

Claims

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Application Information

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IPC IPC(8): H01B5/14H01B13/00
Inventor 张晨光张钲王玉鹏王涛朱新兵
Owner 林州市清华·红旗渠新材料产业化发展中心
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