High order polythiophene film and preparation process thereof

A technology of polythiophene and thin film, which is applied in the field of highly ordered polythiophene thin film and its preparation, can solve the problems of reducing carrier mobility and achieve the effect of improving carrier mobility and crystallization order

Inactive Publication Date: 2009-05-20
CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The crystal region size of these two conformations in the direction vertical to the substrate is often only 3-5nm (J.Polym.Sci.Part B: Polym.Phys.1993, 31, 735 / J.Phys.Chem.B2006, 110, 15763 ), such a small thickness of the ordered crystal region seriously reduces the mobility of carriers in this direction
And how to make the polymer main chain grow in the direction perpendicular to the substrate in the film, and obtain a continuous high-order region in this direction, so as to prepare a highly ordered polythiophene with high carrier mobility in the direction perpendicular to the substrate film, not yet reported

Method used

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  • High order polythiophene film and preparation process thereof
  • High order polythiophene film and preparation process thereof
  • High order polythiophene film and preparation process thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1: be the carbon disulfide solution of the poly(3-butyl)thiophene that concentration is 5 mg / ml, spin coating under room temperature condition, volatilize solvent, obtain film, this film is in the carbon disulfide atmosphere of 0.98 times of saturated vapor pressure After standing for 20 minutes, a highly ordered polythiophene film was obtained.

Embodiment 2

[0024] Embodiment 2: adopt doctor blade to form film. The rest of the conditions and steps are the same as in Example 1 to obtain a highly ordered polythiophene film.

Embodiment 3

[0025] Embodiment 3: Printing into a thin film is adopted. The rest of the conditions and steps are the same as in Example 1 to obtain a highly ordered polythiophene film.

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Abstract

The present invention relates to one kind of highly ordered polythiophene film and its making process. The highly ordered polythiophene film is made with soluble polythiophene material, preferably soluble poly-3-alkyl thiophene and exhibits highly ordered crystalline state with polythiophene molecule main chain perpendicular to the base direction. It is prepared through preparing CS2 solution of soluble polythiophene and slow volatilization of the solvent to film directly. The highly ordered polythiophene film has crystal thickness in the direction perpendicular to the base greater than 16 nm and high carrier mobility in the said direction. The highly ordered polythiophene film may be used in solar cell, photoelectronic detector, semiconductor memory, FET and other electronic devices.

Description

technical field [0001] The invention relates to a high-order polythiophene film and a preparation method thereof, in particular to a crystalline high-order polythiophene film in which the polythiophene molecular main chain is oriented perpendicular to a substrate and a preparation method thereof. Background technique [0002] Organic polymer electronic devices have attracted widespread attention due to their low cost, flexibility, and ease of processing. The film made of soluble polythiophene is a kind of polymer film material with excellent photoelectric function. By substituting the 3-position of polythiophene with an alkyl group, the solubility of polythiophene in organic solvents is greatly improved, making it suitable for preparing thin films by solution film formation. Such electronic devices based on soluble polythiophene films mainly include organic solar cells and organic field effect transistors. For these devices, the carrier mobility is an important indicator, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/18C08L65/00
Inventor 杨小牛鲁广昊
Owner CHANGCHUN INST OF APPLIED CHEMISTRY - CHINESE ACAD OF SCI
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