D-A type polymer semiconductor material and preparation method and application thereof

Abstract

The invention discloses a D-A type polymer semiconductor material and a preparation method and application thereof. The D-A type polymer has a structural formula shown as formula I, wherein R1, R2 and Ar in the formula I are selected from any one of alkyl, aryl and alkyl-substituted aryl; the alkyl is linear or branched alkyl containing 1 to 16 carbon atoms; the aryl is phenyl, fluorenyl, thienyl, fluorine-containing phenyl, nitrogenous heterocyclic radical or silicone-containing heterocyclic radical; a group A represents a receptor and is selected from fluorine-containing phenyl, a diazosulfide group, a derivate of the diazosulfide group, pyrryl, a pyrrolo-pyrrole group and a derivate of the pyrrolo-pyrrole group; X and Y are both selected from any one of S, O, N and Se; m is a natural number from 1 to 4; n is a natural number from 5 to 100. The polymer as shown in the formula I can be used as an organic semiconductor optoelectronic material, and can be specifically used for preparing organic semiconductor photoelectric devices, such as a field-effect transistor, as an organic semiconductor material layer.

Description

technical field [0001] The invention relates to a D-A type polymer semiconductor material and its preparation method and application. Background technique [0002] Organic electronic devices have attracted the attention of academia and industry all over the world for their easy processing, low cost, and high adaptability. As the most basic element of electronic circuits, the development of organic field effect transistors has become a current research hotspot. [0003] Materials are the basis and core of organic electronic devices, and the performance of some organic semiconductor materials has reached a level comparable to that of inorganic semiconductors. For example, the mobility of pentacene (PAN) organic thin film devices has exceeded 5cm 2 V -1 the s -1 (Kelley, T.W.; Muyres, D.V.; Baude, P.F.; Smith, T.P.; Jones, T.D. Mater. Res. Soc. Symp. Proc. 2003, 771, 169.). However, the cost and stability of this material are still far behind that of inorganic materials, so...

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Problems solved by technology

[0004] Thiophene-containing polymers are a class of organic materials with good photoelectric properties. Thieno[3,4-c]thiophene and its derivatives are limited to a small number of reports on the synthesis of monomers, and all of them are small molecule materials. In fact, With thieno[3,4-c]thiophene as the core, a series of organic semiconductor optoelectronic material monomers can be prepared, but the preparation and properties of related polymers have not been reported.

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