Anthanthrene based compound and semiconductor device

Abstract

An anthanthrene based compound of the structural formula (1) is disclosed:wherein X represents an element of the Group 16; n represents an integer of from 0 to 20; m represents an integer of from 1 to 9; a bonding position in the A segment to the B segment, a bonding position in the B segment to the A segment, a bonding position in the B segment to the C segment, and a bonding position in the C segment to the B segment are at least one of from the 1-position to the 5-position and from the 7-position to the 11-position; and each of substituents R1, R2, R3, R4, R5, R7, R8, R9, R10 and R11 independently represents, for example, a substituent of one member selected from the group consisting of a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group and the like.

Description

CROSS REFERENCES TO RELATED APPLICATIONSThe present application claims priority to Japanese Priority Patent Application JP 2009-156459 filed in the Japan Patent Office on Jul. 1, 2009, the entire contents of which is hereby incorporated by reference.BACKGROUNDThe present application relates to an anthanthrene based compound and a semiconductor device including a semiconductor layer composed of such an anthanthrene based compound.In recent years, semiconductor devices including a semiconductor layer composed of an organic semiconductor material have been receiving considerable attention. In such a semiconductor device, a semiconductor layer can be coated and deposited at a low temperature as compared with a configuration including a semiconductor layer composed of an inorganic material. For that reason, such a semiconductor device is advantageous for realizing a large area and can be formed on a flexible substrate which is, however, low in heat resistance, such as plastics. Reduction...

AI Technical Summary

Benefits of technology

In the anthanthrene based compound according to an embodiment, a repeating unit (monomer unit) is stable in the atmosphere, and the repeating unit (monomer unit) has a wide π-system (having more aromatic rings). That is, each of the carbon atoms at the 6-position and the 12-position of the monomer unit in the anthanthrene based compound, etc. according to the embodiment is substituted with an element belonging to the Group 16, and therefore, the 6-position and the 12-position are not a reaction active site. Thus, the compound hardly causes a decomposition reaction by oxygen, light, water, high temperature or the like and is excellent in stability in the atmosphere. Also, larger overlapping of orbits is formed between adjacent molecules, and carrier mobility can be enhanced. That is, according to the embodiments, it is possible to provide a stable organic semiconductor material having high oxygen resistance, light fastness, heat resistance, water resistance and solvent resistance in the atmosphere and also having high carrier mobility. Therefore, by constituting a channel-forming region from the anthanthrene based compound, etc. according to the embodiment, the semiconductor device (organic transistor) according to the embodiment is able to display high carrier mobility and even after a thermal treatment at a high temperature in the atmosphere, is able to maintain high stability and high carrier mobility. Also, the anthanthrene based compound, etc. according to the embodiment has high stability, and therefore, it is possible to widen a width of a manufacturing process of a semiconductor device

Problems solved by technology

However, the polyacene compound as a constituent unit has reaction active sites within a molecule thereof (specifically, for example, so far as pentacene is concerned, an electron density is high at the 6-position and the 12-position, and the 6-position and the 12-position are a reaction active site) and easily causes a decomposition reaction by oxygen, light, water, high temperature or the like, and its stability in the atmosphere is not satisfactory.

Then, even in an oligo polyacene compound, so far as it has such a polyacene compound, it may be considered that it is difficult to establish stability of the molecule.

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