Preparation method and application of polymer semiconductor film

A thin film preparation and semiconductor technology, which is applied in the field of polymer semiconductor film preparation, can solve the problems of difficult large-area preparation, time-consuming and laborious, etc., and achieve the effect of simple preparation method, simple and fast experimental process, and avoiding the formation of coffee rings

Active Publication Date: 2019-08-30
NORTHEAST NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The current research on polymer semiconductor materials, on the one hand, develops new polymers to improve material performance; Organic semiconductor thin films with good orientation are inseparable from the guidance of external forces. Usually, this process is time-consuming and laborious, and it is difficult to prepare a large area. Therefore, it is still necessary to find a simple and effective method for preparing organic semiconductor thin films, especially polymer semiconductor thin films. It is the most difficult problem of current research

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  • Preparation method and application of polymer semiconductor film
  • Preparation method and application of polymer semiconductor film
  • Preparation method and application of polymer semiconductor film

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment 1, prepare the PCDTPT film semiconductor preparation based on silicon dioxide substrate

[0043] (1) Preparation of PCDTPT polymer semiconductor solution

[0044] Using chloroform as a solvent and PCDTPT polymer powder as a solute, a PCDTPT semiconductor solution with a concentration of 0.25 mg / ml was prepared. Note that during the solution preparation process, it is necessary to strictly ensure that any tools in contact with drugs and solvents have a high degree of cleanliness, and at the same time, no plastic tools or containers can be used to contact solvents or solutions. The specific operation is as follows: Take a brown bottle with a volume of 20ml and clean it for later use. Use an electronic balance to weigh 2.5mg of PCDTPT polymer powder and place it in the bottle. Use a glass dropper and a graduated cylinder to take 10ml of chloroform solution and mix it with the solute. Put the cleaned rotor into the solution, place it on the turntable and stir fo...

Embodiment 2

[0058] Embodiment 2, preparation of PCDTPT polymer semiconductor thin film preparation based on Si substrate

[0059] (1) Preparation of PCDTPT polymer semiconductor solution

[0060] Using chloroform as a solvent and PCDTPT polymer powder as a solute, a PCDTPT semiconductor solution with a concentration of 0.25 mg / ml was prepared. Same as embodiment 1 step (1)

[0061] (2) Si substrate preparation and target substrate hydroxylation treatment

[0062] First, the Si substrate was cut into squares of 2 cm x 2 cm and 0.5 cm x 0.5 cm with a glass knife and cleaned. The cleaning process was the same as step (1) in Example 1. The 0.5cm×0.5cm SiO 2 The substrate is used as the upper target substrate of the laminated structure, and the Si substrate is placed in the piranha washing solution (a mixed solution of concentrated sulfuric acid with a mass concentration of 98% and hydrogen peroxide with a mass concentration of 30% at a volume ratio of 7:3) , form hydroxylation on the surf...

Embodiment 3

[0072] Example 3, preparation of PCDTPT polymer semiconductor thin film based on flexible PVA substrate and preparation of ultra-thin flexible field-effect transistor

[0073] (1) Cross-linked PVA solution configuration

[0074] Dissolve PVA powder in secondary deionized water at a concentration of 6wt%, heat and stir to dissolve. In order to enhance the solvent resistance of the substrate, the cross-linking agent glutaraldehyde is added after dissolving evenly for cross-linking (mixing volume ratio 200:3), and the cross-linked PVA is formed after continuing to stir evenly.

[0075] (2) Preparation of PCDTPT polymer semiconductor solution

[0076] Using chloroform as a solvent and PCDTPT polymer powder as a solute, a PCDTPT semiconductor solution with a concentration of 0.25 mg / ml was prepared. Same as embodiment 1 step (1)

[0077] (3) PVA substrate preparation and target substrate hydroxylation treatment

[0078] 3-1) Firstly, the Si substrate was cut into squares of 2 c...

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Abstract

The invention relates to a preparation method and an application of a polymer semiconductor film and is a substrate-based laminate instillation method for preparing the polymer semiconductor film. Themethod is characterized in that an upper substrate having a hydroxyl group attached to the surface and an OTS-modified upper substrate are included, a laminated instillation structure is designed, aand film formation is carried out by instillation under the structure to achieve preparation of large-area high-performance polymer semiconductor films. The polymer semiconductor film is grown on the substrate, on one hand, a problem of film non-uniformity caused by the coffee ring effect in a traditional instillation method is solved, on the other hand, directional guidance during film growth canbe achieved without external force, directional growth of the organic film is facilitated, the method is especially suitable for preparation of high quality polymer films, operation is simple and convenient, experimental requirements are low, and no large instruments are required.

Description

technical field [0001] The invention relates to a preparation method and application of a polymer semiconductor thin film, which is a simple and effective method for preparing a high-quality large-area polymer semiconductor thin film, and belongs to the field of organic electronics. Background technique [0002] Organic thin-film transistors (Organic Thin-film Transistors, OTFTs) are active devices that regulate the conductivity of organic semiconductor thin films through electric fields. Compared with inorganic transistors, OTFTs have the advantages of light weight, low cost, [0003] It has the characteristics of good flexibility and various materials, and has broad application prospects in low-cost smart labels, electronic paper and sensors. [0004] The core part of an organic field effect transistor is an organic semiconductor material, which undertakes the role of carrier transport. It is the most important part of field effect transistors, and organic semiconductor ...

Claims

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Application Information

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IPC IPC(8): H01L51/05H01L51/30H01L51/40C08J5/18C08L65/00
CPCC08J5/18C08J2365/00H10K71/12H10K85/111H10K10/462H10K10/464Y02E10/549
Inventor 周瑜汤庆鑫童艳红
Owner NORTHEAST NORMAL UNIVERSITY
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