Method for preparing phthalocyanine monocrystal thin film on copper film modified graphene substrate

A technology of single crystal thin film and graphene, which is applied in the field of graphene, can solve the problems of unfavorable carrier transport and achieve high conductivity, flexibility, and shear resistance.

Inactive Publication Date: 2018-03-02
SHAOXING UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

This stack structure is conducive to the transport of carriers in the longitudinal direction perpendicular to the substrate surface, but it is not conducive to the transport of carriers in the transverse direction parallel to the substrate surface.

Method used

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  • Method for preparing phthalocyanine monocrystal thin film on copper film modified graphene substrate
  • Method for preparing phthalocyanine monocrystal thin film on copper film modified graphene substrate
  • Method for preparing phthalocyanine monocrystal thin film on copper film modified graphene substrate

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Embodiment

[0024] Embodiment: a kind of method for preparing phthalocyanine single crystal thin film on copper film modified graphene substrate, as shown in Figure 1- Figure 5 As shown, the method is:

[0025] In step (1), the graphene on the copper-based graphene is transferred to the SiO2 / Si substrate by polymethyl methacrylate assisted chemical etching.

[0026] Step (2), place the SiO2 / Si substrate in a vacuum heating device for high-temperature annealing, heat the SiO2 / Si substrate to 500°C, and keep it at 500°C for 1 hour to remove the polyformaldehyde remaining on the SiO2 / Si substrate methyl acrylate, and then the SiO2 / Si substrate was naturally cooled to room temperature under vacuum to obtain a clean graphene substrate.

[0027] Step (3), the graphene substrate is loaded into the vacuum chamber, and the air pressure of the vacuum chamber is less than 1×10 -5 Pa, at the same time, put the copper wire or copper particles with a copper content greater than or equal to 99.99% in...

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Abstract

The invention provides a method for preparing a phthalocyanine monocrystal thin film on a copper film modified graphene substrate, belonging to the technical field of graphene. The method provided bythe invention can be used for preparation of an organic field effect device with high performance. In the organic field effect device, the graphene is frequently used as an electrode coating, and thehigh conductivity and the crystallization induction effect of the graphene to an organic molecular thin film are utilized to improve the injection and transmission efficiency of a current carrier in the device, so performances of the device are improved. According to the invention, a graphene substrate usually induces phthalocyanine molecules to form a pi-pi stacked structure which is perpendicular to the graphene substrate, and the pi-pi stacked structure is unfavourable for transmission of the current carrier in the horizontal direction parallel to the surface of the substrate. Thus, throughmodification of a copper nanoparticle thin layer with a thickness of 1 nanometer on the graphene substrate, controllable growth of the phthalocyanine monocrystal thin film with a monocrystal structure and with a molecular pi-pi stacked direction parallel to the graphene substrate can be realized.

Description

technical field [0001] The invention belongs to the technical field of graphene, in particular to a method for preparing a phthalocyanine single crystal thin film on a copper film modified graphene substrate. Background technique [0002] Planar π-conjugated organic small molecule materials represented by phthalocyanine molecules are typical carrier transport materials in organic photovoltaic devices (OPV), organic light emitting devices (OLED) and organic field effect devices (OFET). Realizing the control of the structure of organic small molecule thin films with planar molecular structure is of great significance for the preparation of organic optoelectronic devices. Graphene has excellent electrical conductivity, light transmission and flexibility, so it is an excellent electrode material, and has been widely used in the fields of organic optoelectronic devices such as organic photovoltaics, organic light-emitting and organic field effects. The graphene substrate usually...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C30B29/54C30B23/00
CPCC30B23/00C30B29/54
Inventor 窦卫东
Owner SHAOXING UNIVERSITY
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