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Flexible composite transparent electrode based on metal nanowires and titanium carbide nanosheets and preparation method and application of flexible composite transparent electrode

A technology of metal nanowires and transparent electrodes, applied in the field of nanomaterials, can solve the problems of low hole-collecting device performance, etc., and achieve the effect of improving the actual conductive area, good optical and electrical properties, and excellent mechanical properties

Active Publication Date: 2019-06-28
NANKAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be applied to flexible photovoltaic devices. The introduction of two-dimensional material titanium carbide nanosheets solves the problem of low device performance due to the limited ability to collect holes in pure silver nanowire electrodes, and can obtain energy conversion efficiency comparable to that of ITO glass. , flexible photovoltaic devices based on flexible composite transparent electrodes have excellent bending performance, and the energy conversion efficiency of the device remains above 80% of its initial efficiency after thousands of small-radius bending

Method used

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  • Flexible composite transparent electrode based on metal nanowires and titanium carbide nanosheets and preparation method and application of flexible composite transparent electrode
  • Flexible composite transparent electrode based on metal nanowires and titanium carbide nanosheets and preparation method and application of flexible composite transparent electrode
  • Flexible composite transparent electrode based on metal nanowires and titanium carbide nanosheets and preparation method and application of flexible composite transparent electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042](1) Coat the silver nanowire coating solution (2.5mg / mL) on the glass surface with a Meyer rod. After the coating solution evaporates, place it on a hot stage at 60°C and heat it for 5 minutes to completely remove the solvent and obtain a coating Transparent conductive network of silver nanowires on a glass surface.

[0043] (2) Scrape-coat a layer of polyurethane prepolymer with a uniform thickness on the surface of the transparent conductive network coated with silver nanowires, the coating thickness is 150 μm; heating and curing. The cured polyurethane is peeled off from the glass surface to obtain a flexible transparent electrode embedded with silver nanowires and based on polyurethane.

[0044] (3) Weigh 0.16 g of titanium carbide nanosheets prepared by the chemical etching method, put them in a beaker, add 80 ml of deionized water, and sonicate for 1 minute to obtain a 0.5 mg / ml titanium carbide nanosheet dispersion.

[0045] (4) Coating the titanium carbide nanos...

Embodiment 2

[0048] (1) Spin-coat the silver nanowire coating solution (0.5mg / mL) on the surface of ethylene phthalate (PET). solvent to obtain a transparent conductive network of silver nanowires coated on the surface of ethylene phthalate (PET).

[0049] (2) Scrape-coat a layer of polyurethane prepolymer with a uniform thickness on the surface of the transparent conductive network coated with silver nanowires, the coating thickness is 300 μm; heating and curing. The cured polyurethane was peeled off from the glass surface to obtain a flexible transparent electrode embedded with silver nanowires and a polymer substrate.

[0050] (3) Weigh 0.16 g of titanium carbide nanosheets prepared by chemical etching and place them in a beaker, add 80 ml of isopropanol, and sonicate for 5 minutes to obtain a 0.5 mg / ml titanium carbide nanosheet dispersion.

[0051] (4) Coating the titanium carbide nanosheet dispersion liquid obtained in (3) on the surface of the silver nanowire flexible transparent e...

Embodiment 3

[0054] (1) Spin-coat the silver nanowire coating solution (0.5mg / mL) on the surface of ethylene phthalate (PET). After the coating solution evaporates, dry it with a nitrogen gun to completely remove the solvent and obtain a Silver nanowire transparent conductive electrode on PET surface.

[0055] (2) Scrape-coat a layer of polyurethane prepolymer with a uniform thickness on the surface of the transparent conductive network coated with silver nanowires by weighing, and the coating thickness is 100 μm; UV curing. The cured polyurethane was peeled off from the PET surface to obtain a composite embedded with silver nanowires and the base was polyurethane.

[0056] (3) Weigh 0.16 g of titanium carbide nanosheets prepared by chemical etching and place them in a beaker, add 160 ml of a mixture of isopropanol and ethylene glycol, and sonicate for 5 minutes to obtain a 0.25 mg / ml titanium carbide nanosheet dispersion solution.

[0057] (4) Coating the titanium carbide nanosheet dispe...

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Abstract

The invention provides a preparation method and application of a flexible composite transparent electrode based on metal nanowires and titanium carbide nanosheets. A transparent polymer is used as a flexible substrate, and a flexible transparent electrode compounded by two conductive materials is obtained through processing by a solution method. The electrode has excellent photoelectric property,high surface flatness and good flexibility and bending resistance; the photoelectric property of the film is close to that of a commercially available tin indium oxide film evaporated on glass, and issuperior to that of a commercially available tin indium oxide film sputtered on a flexible substrate such as ethylene terephthalate. The flexible composite transparent electrode can be applied to anorganic photovoltaic device. Due to the existence of the titanium carbide nanosheet, the practical and effective conductive area of the surface of the electrode is expanded, and the electrode can collect holes generated by exciton separation; the flexible photovoltaic device prepared based on the flexible composite electrode has very good bending resistance, and after thousands of times of small-radius bending, the energy conversion efficiency of the device is still maintained above 80% of the initial efficiency of the device.

Description

technical field [0001] The invention belongs to the fields of nanomaterials, organic semiconductors and flexible photoelectric devices; combined with a solution processing method, a flexible transparent electrode is prepared with a metal nanowire and a new two-dimensional material titanium carbide nanosheet; it is mainly used in flexible, bendable, transparent and translucent electrodes Construction of electronic devices, etc. Background technique [0002] Flexible electronics is an emerging technical field. Its appearance has attracted widespread attention and attention from all over the world, and it is believed that it may bring about the next electronic technology revolution. Compared with traditional electronic devices, flexible electronic devices can adapt to changes in the environment to a certain extent and meet the needs of equipment deformation, so they have greater flexibility. Flexible transparent electrodes are very core and basic components in flexible electro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCY02E10/549
Inventor 梁嘉杰唐宏浩
Owner NANKAI UNIV