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Preparation method of PVDF (polyvinylidene fluoride)-based organic ferroelectric polymer superlattice

A technology of organic iron and polymers, applied in circuits, electrical components, electrical solid devices, etc., can solve the problems that the research on superlattice structure has not yet been carried out, and achieve the effect of low cost and simple process

Inactive Publication Date: 2014-06-11
SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The research on the superlattice structure of this kind of polymer ferroelectric material has not been carried out,

Method used

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  • Preparation method of PVDF (polyvinylidene fluoride)-based organic ferroelectric polymer superlattice

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The substrate material is cleaned to ensure the flatness of its surface, and the surface is treated with hydrophobicity; the substrate material can be quartz glass. Use iron stearate to wipe the surface repeatedly, wipe off the iron stearate residue attached to the surface with absorbent cotton, and then rinse the quartz glass substrate with deionized water.

[0020] Dissolve PVDF-based polymer P(VDF-TrFE) and PVDF-based polymer P(VDF-TrFE-CFE) organic ferroelectric polymer in dimethyl sulfoxide solution respectively, and the solution concentration is 0.01% by mass %.

[0021] Spread P(VDF-TrFE) and P(VDF-TrFE-CFE) organic ferroelectric polymer dimethyl sulfoxide solutions evenly into two Langmuir-Brockett equipments that have been injected with static ultrapure water. In the liquid tank, the resistance of ultrapure water is 18.2 megaohms. After the organic ferroelectric polymer is evenly distributed on the liquid surface, and the liquid surface is squeezed to form a f...

Embodiment 2

[0025] The substrate material is cleaned to ensure the flatness of its surface, and the surface is treated with hydrophobicity; the substrate material can be quartz glass. Use iron stearate to wipe the surface repeatedly, wipe off the iron stearate residue attached to the surface with absorbent cotton, and then rinse the quartz glass substrate with deionized water.

[0026] Dissolve PVDF-based polymer P(VDF-TrFE) and PVDF-based polymer P(VDF-TrFE-CFE) organic ferroelectric polymer in dimethyl sulfoxide solution respectively, and the solution concentration is 0.01% by mass %.

[0027] Spread P(VDF-TrFE) and P(VDF-TrFE-CFE) organic ferroelectric polymer dimethyl sulfoxide solutions evenly into two Langmuir-Brockett equipments that have been injected with static ultrapure water. In the liquid tank, the resistance of ultrapure water is 18.2 megaohms. After the organic ferroelectric polymer is evenly distributed on the liquid surface, and the liquid surface is squeezed to form a f...

Embodiment 3

[0031] The substrate material is cleaned to ensure the flatness of its surface, and the surface is treated with hydrophobicity; the substrate material can be quartz glass. Use iron stearate to wipe the surface repeatedly, wipe off the iron stearate residue attached to the surface with absorbent cotton, and then rinse the quartz glass substrate with deionized water.

[0032] Dissolve PVDF-based polymer P(VDF-TrFE) and PVDF-based polymer P(VDF-TrFE-CFE) organic ferroelectric polymer in dimethyl sulfoxide solution respectively, and the solution concentration is 0.01% by mass %.

[0033] Spread P(VDF-TrFE) and P(VDF-TrFE-CFE) organic ferroelectric polymer dimethyl sulfoxide solutions evenly into two Langmuir-Brockett equipments that have been injected with static ultrapure water. In the liquid tank, the resistance of ultrapure water is 18.2 megaohms. After the organic ferroelectric polymer is evenly distributed on the liquid surface, and the liquid surface is squeezed to form a f...

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Abstract

The invention discloses a preparation method of a PVDF (polyvinylidene fluoride)-based organic ferroelectric polymer superlattice. The method comprises the steps of dissolving the PVDF-based organic ferroelectric polymer in dimethyl sulfoxide solution, alternately transferring different PVDF-based organic ferroelectric polymers with adjustable thickness onto a substrate through a Langmuir-Blodgett method, annealing the substrate, removing interface residual solvent to ensure that the superlattice has good crystallization characteristics, and forming a PVDF organic polymer superlattice stsructure. The prepared PVDF-based organic ferroelectric polymer superlattice is simple in method and process, the thickness of a single layer film can be precisely controlled, and the research on the unique phase changing, electric characteristics and optical characteristics of the PVDF-based organic ferroelectric polymer superlattice structure as well as relevant devices can be guaranteed.

Description

technical field [0001] The invention relates to a preparation technology of an organic polymer superlattice film, in particular to a preparation method of a polyvinylidene fluoride-based organic ferroelectric polymer superlattice. Background technique [0002] The concept of superlattice was proposed in the 1970s. Its definition is to use two semiconductor materials with better lattice matching to alternately grow periodic structures. The thickness of a single layer is controlled below a few to tens of nanometers. Electrons are propagating or oscillating along the growth direction. Superlattices can be divided into component superlattices, doped superlattices, multidimensional superlattices and strained superlattices. Superlattice is proposed based on semiconductor materials. However, with the development and progress of thin film preparation technology, such as molecular beam epitaxy, pulsed laser sputtering deposition, atomic layer deposition, metal organic chemical vapor...

Claims

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Application Information

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IPC IPC(8): C08J7/00C08L27/16H01L51/00
Inventor 王建禄赵晓林孟祥建韩莉孙硕沈宏孙璟兰褚君浩
Owner SHANGHAI INST OF TECHNICAL PHYSICS - CHINESE ACAD OF SCI
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