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Method for preparing reduced graphene oxide-based flexible transparent conductive thin film

A technology of transparent conductive film and graphene film, which is applied in cable/conductor manufacturing, circuits, electrical components, etc., can solve the problems of hydrazine being highly toxic and reducing electron transmission efficiency, and achieve low cost, abundant raw materials, and green preparation process The effect of environmental protection

Inactive Publication Date: 2013-08-07
NANJING UNIV OF POSTS & TELECOMM
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Problems solved by technology

The first two reduction methods are not suitable for plastic substrates (usually resistant to 150°C); but the classic hydrazine hydrate reduction has great limitations, not only because hydrazine is highly toxic, but also graphene oxide reduced by hydrazine will show Obvious defects that greatly reduce the electron transfer efficiency

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  • Method for preparing reduced graphene oxide-based flexible transparent conductive thin film
  • Method for preparing reduced graphene oxide-based flexible transparent conductive thin film
  • Method for preparing reduced graphene oxide-based flexible transparent conductive thin film

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[0044] Example: Preparation method of flexible transparent reduced graphene oxide conductive film.

[0045] Preparation and reduction of graphene oxide film: First, the aqueous phase suspension (3 mg / mL) of large sheets of graphene oxide was ultrasonicated for 20 min by a powerful oscillating ultrasonic machine to obtain a dispersed and stable solution. In order to highlight the influence of graphene oxide size on conductivity, graphene oxide aqueous solutions of different sizes were prepared: the solution was divided into three parts, and one part was reserved (the area of ​​graphene oxide was 1000-1200 μm 2 ), take the remaining two solutions and use a probe ultrasonic machine to sonicate for 10 min and 20 min respectively, aiming to obtain solutions of graphene oxide with different sizes (the area of ​​graphene oxide is 100-200 μm for 10 min of probe sonication 2 ; Probe ultrasonic 20 min graphene oxide area is 10-20 μm 2 ). Secondly, the PET substrate was treated by plas...

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Abstract

The invention relates to a method for preparing a reduced graphene oxide-based flexible transparent conductive thin film. A rod-coating film preparation method can be used for reducing a graphene oxide thin film in a solution processing way by means of a hydroiodic acid under the condition of less than or equal to 100 DEG C, so that a technology for the large-area preparation of the reduced graphene oxide-based flexible transparent conductive thin film is implemented. The prepared flexible transparent conductive thin film can be widely applied to the field of photoelectric display, and has the advantages of high electrical conductivity, high transmittance, high mechanical performance, large-area preparation performance (18*20cm<2>), richness and high utilization rate of raw materials, simplicity and environment friendliness of a preparation process, and the like. According to the flexible transparent conductive thin film obtained by the technology, the shortcoming of qualitative fragile of the conventional indium tin oxide (ITO) can be better overcome; and the flexible transparent conductive thin film is expected to be widely applied to the field of photoelectric functional devices such as an organic electroluminescent display and an organic solar cell as a flexible transparent electrode.

Description

technical field [0001] The invention belongs to the technical field of nano photoelectric materials. Specifically, it refers to a technology that can reduce graphene oxide film by solution processing using rod coating method and reduce graphene oxide film under the condition of less than or equal to 100 degrees Celsius with the help of hydroiodic acid, so as to realize the technology of preparing transparent conductive film of reduced graphene oxide in a large area , the flexible transparent conductive film has potential practical application value in the preparation of high-performance transparent conductive films, especially flexible optoelectronic devices. Background technique [0002] Flexible transparent conductive films have been widely studied and applied in many fields, and are mainly used in plastic electronics fields such as flexible touch screen displays, flexible transistors, flexible memories, flexible light-emitting diodes, and flexible solar cells. Currently,...

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Application Information

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IPC IPC(8): H01B13/00
Inventor 黄维解令海杨阳刘正东殷宗友仪明东
Owner NANJING UNIV OF POSTS & TELECOMM
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