Thienopyrrole quinone compound, preparation method and semiconductor device comprising the material

Abstract

The invention discloses a class of thienopyrrole quinone compound, a preparation method and its application as a semiconductor active layer in an organic field effect transistor. This type of compound has the characteristics of good molecular skeleton planarity, strong self-assembly ability, low LUMO energy level, narrow energy level band gap, and insensitivity to oxygen and water. The introduction of the pyrrole structure facilitates adjustment of sample dissolution through modification of substituents Good for solution processing. The organic field effect transistor with compound Ia as the semiconductor layer prepared by spin coating has excellent bipolar field effect performance (μh=5.3×10-3cm2V-1s-1,μe=7.7×10-3cm2V-1s-1) . Its switch current ratio is above 104, and it is stable in the air, so it has important application value.

Description

technical field [0001] The invention relates to a semiconductor material of an organic field effect transistor, in particular to a thienopyrrole quinone compound, a preparation method and a semiconductor device containing the material. Background technique [0002] In recent decades, with the design and synthesis of new organic semiconductor materials and the optimization of device fabrication techniques, organic field-effect transistors (OFETs) have achieved rapid development in terms of device performance. Among them, the development of p-type semiconductor is the fastest, and its highest field effect mobility is comparable to that of traditional inorganic silicon materials, and its air stability is better. N-type semiconductors generally have low field-effect mobility and poor air stability, so their development has been lagging behind. Reports on bipolar semiconductors are even rarer. In view of the important role of bipolar semiconductors in the construction of logic ...

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Problems solved by technology

For example, Reid J.Chesterfield et al. first discovered that trithiophene-type tetracyanoquinone compounds exhibit bipolar charge transport at high temperatures, but their bipolar field-effect mobility is low (see: ReidJ.Chesterfield, et al. Adv. Mater. 2003, 15(15), 1278–1282)

Since then, although bipolar organic field effect transistors using quinone compounds as semiconductor layers have been reported (see: Handa S., et al. Chem.Comm.2009(26):3919), the number is very limited

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