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Two-dimensional conjugated polymer heterojunction, and preparation method and application thereof

A two-dimensional conjugation and polymer technology, applied in semiconductor/solid-state device manufacturing, photovoltaic power generation, electrical components, etc., can solve problems that limit large-scale applications, achieve excellent photoelectric performance, easy operation, and good universality Effect

Active Publication Date: 2021-11-02
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Although some methods have been used to prepare two-dimensional conjugated polymer heterojunctions (see B. Sun et al., Chem. Mater. 2017, 29, 4367-4374), most of the preparation methods are solvothermal, The large-scale application of this preparation method is limited by the solubility of precursor molecules, and the thickness of the prepared polymer material is about tens of nanometers. Quality still faces huge challenges

Method used

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  • Two-dimensional conjugated polymer heterojunction, and preparation method and application thereof
  • Two-dimensional conjugated polymer heterojunction, and preparation method and application thereof
  • Two-dimensional conjugated polymer heterojunction, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0095] Example 1: Preparation of a large-area ultra-thin and highly crystalline two-dimensional conjugated polymer heterojunction based on tetrabromophenyl zinc porphyrin (Zn-4BrTPP) conjugated monomer

[0096] The synthetic steps of tetrabromophenyl zinc porphyrin (Zn-4BrTPP) monomer are as follows:

[0097]

[0098] Among them, Zn-4BrTPP: 1 H NMR (300MHz, CDCl 3 ): δ7.83(d, 8H, J=8.3Hz; m-Ph), 8.02(d, 8H, J=8.2Hz; o-Ph), 8.31ppm(s, 8H; β-H).MS( MALDI TOF): m / z=994(M + ).

[0099] The preparation of the Zn-4BrTPP monomer can refer to the report in G.J.Capitosti et al., J.Org.Chem.2003,68,247-261.

[0100] The preparation process of the large-area ultra-thin and highly crystalline two-dimensional conjugated polymer heterojunction is as follows:

[0101] Choose silver-based graphdiyne as the substrate, place the Zn-4BrTPP monomer and the substrate in the reaction chamber of the quartz tube, and then put the quartz tube into the dual-temperature zone chemical vapor depos...

Embodiment 2

[0103] Example 2: Fabrication of Vertical Organic Field Effect Transistors by Two-Dimensional Conjugated Polymer Heterojunction and Testing of Device Performance

[0104] Device preparation: transfer the two-dimensional conjugated polymer heterojunction prepared in Example 1 to the pre-cleaned Si / SiO 2 On the substrate, the specific method can refer to the report in C.A. Richter et al., ACS Nano.2011, 11, 9144-9153. A vertical organic field effect device was prepared under atmospheric conditions by using a gold film (as the top electrode).

[0105] Device performance test: the above-mentioned vertical organic light-emitting field effect transistor device was transferred to a Keithley4200 micro-operation probe station, and its voltage-current relationship curve was tested.

Embodiment 3

[0106] Example 3: Preparation of a large-area ultra-thin and highly crystalline two-dimensional conjugated polymer heterojunction based on tetrabromotetrathienoanthracene (TBTTA) conjugated monomer

[0107] The synthetic steps of tetrabromotetrathienoanthracene (TBTTA) monomer are as follows:

[0108]

[0109] Among them, TBTTA: 1 H NMR (δ, CDCl 3 ):8.69(2H,s),7.36(4H,s),3.04(8H,t,J=7.2Hz),1.85(8H,m),1.2–1.6(24H,m),0.92(12H,t, J=6.6Hz). MS (MALDI TOF): m / z=445 (M + ).

[0110] The preparation of the TBTTA monomer can refer to the report in J.L.Brusso et al., Chem.Mater.2008, 20, 2484-2494.

[0111] The preparation process of the large-area ultra-thin and highly crystalline two-dimensional conjugated polymer heterojunction is as follows:

[0112] Choose copper-based graphene as the substrate, place TBTTA monomer and copper-based graphene in the reaction chamber of the quartz tube, and then put the quartz tube into the dual-temperature zone chemical vapor deposition furn...

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Abstract

The invention discloses a two-dimensional conjugated polymer heterojunction, and a preparation method and application thereof. According to the preparation method, a chemical vapor deposition method is utilized, a solid source is subjected to an interfacial copolymerization reaction on the surface of a substrate, and the two-dimensional conjugated polymer heterojunction is prepared. The method is good in universality, easy and convenient to operate, low in cost, low in temperature, normal in pressure and capable of achieving large-scale production capacity. The area of the prepared two-dimensional conjugated polymer heterojunction is 1 cm<2> or more, and the thickness of the prepared two-dimensional conjugated polymer heterojunction is 0.1-20 nm; and the two-dimensional conjugated polymer heterojunction can be used in the fields of electronic devices, photoelectricity, photovoltaics, solar cells, energy storage, gas storage and separation, field effect transistor preparation and the like.

Description

technical field [0001] The invention belongs to the technical field of two-dimensional conjugated polymers and organic optoelectronic materials, and specifically relates to a two-dimensional conjugated polymer heterojunction and its preparation method and application. Background technique [0002] Ultrathin two-dimensional conjugated polymer semiconductor materials have many unique electrical properties, and are one of the important fields of research on organic semiconductor materials. Specific applications of this material include: sensors (Sensors), organic field-effect transistors (OFETs), vertical organic field-effect transistors (VOFETs), organic light-emitting diodes (OLEDs), organic photovoltaics (OPV) and organic thermoelectric devices, etc. At the same time, two-dimensional conjugated polymer semiconductor materials have a broad research space, and one of the most potential research directions is to construct heterojunctions, that is, stacking two-dimensional conju...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/30H01L51/46H01L51/54
CPCC08G61/12C08G61/126C08G2261/11C08G2261/18C08G2261/3241C08G2261/312C08G2261/3243C08G2261/344C08G2261/375C08G2261/91C08G2261/92H10K85/111H10K85/113Y02E10/549
Inventor 董焕丽王永帅胡文平
Owner INST OF CHEM CHINESE ACAD OF SCI
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