Semiconductor devices are described that include a semiconductor layer that comprises a perfluoroether acyl oligothiophene compound, preferably an α,ω-bis-perfluoroether acyl oligothiophene compound. Additionally, methods of making semiconductor devices are described that include depositin
Semiconductor devices are described that include a semiconductor layer that comprises a perfluoroether acyl oligothiophene compound, preferably an α,ω-bis-perfluoroether acyl oligothiophene compound. Additionally, methods of making semiconductor devices are described that include depositing a semiconductor layer that contains a perfluoroether acyl oligothiophene compound, preferably an α,ω-bis(2-perfluoroether acyl oligothiophene compound.
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We claim: 1. A semiconductor device comprising an n-channel semiconductor layer comprising a compound of the formula: wherein Y is a hydrogen atom, a halogen atom, an alkyl group, and aryl group or a perfluoroether acyl group, p is at least three, and Rf is a perfluoroether group. 2. The semic
We claim: 1. A semiconductor device comprising an n-channel semiconductor layer comprising a compound of the formula: wherein Y is a hydrogen atom, a halogen atom, an alkyl group, and aryl group or a perfluoroether acyl group, p is at least three, and Rf is a perfluoroether group. 2. The semiconductor device of claim 1, wherein said semiconductor layer comprises a compound of the formula: wherein each Rf is a perfluoroether group, and n is at least 3. 3. The device of claim 1 wherein each Rf is independently a perfluoroalkoxyalkylene group or a perfluoropolyether group. 4. The device of claim 1 wherein each Rf corresponds to the formula: description="In-line Formulae" end="lead"Rf 1--O--(Rf2)x--(Rf3)--description="In-line Formulae" end="tail" wherein R1f represents a perfluoroalkyl group, Rf2 represents a perfluorinated polyalkyleneoxy group consisting of perfluoroalkyleneoxy groups having 1 to 4 perfluorinated carbon atoms or a mixture of such perfluoroalkyleneoxy groups, Rf3 represents a perfluoroalkylene group, x is 0 to 25. 5. The device of claim 4 wherein each Rf2 is independently selected from--CF2--CF2--O--,--CF(CF3)--CF2--O--,--CF2--CF(CF3)--O--,--CF2--CF2--CF2--O--,--CF2--O--,--CF(CF3)--O--, and--CF2--CF2--CF2--CF2--O--. 6. The device of claim 4 wherein each Rf3 is independently selected from--CF2--CF2--,--CF(CF 3)--CF2--,--CF2--CF(CF3)--,--CF 2--CF2--CF2--,--CF2--O--,--CF(CF 3)--, and--CF2--CF2--CF2--CF2--. 7. The device of claim 4 wherein x is 1 to 4. 8. The device of claim 2 wherein Rf is Rf 1--O--[CF(CF3)--CF2O]x--CF(CF 3)--wherein Rf1 is a perfluoroalkyl group and x is at least one. 9. The device of claim 4 wherein Rf1 represents a perfluorinated alkyl group having 1 to 6 carbon atoms. 10. The device of claim 1 wherein n is 3 to 6. 11. The semiconductor device of claim 1, further comprising conducting layer, a dielectric layer, or a combination thereof adjacent to the semiconductor layer. 12. The semiconductor device of claim 1, wherein said semiconductor device comprises an organic thin film transistor. 13. The semiconductor device of claim 1, further comprising a source electrode and a drain electrode in contact with the semiconductor layer, wherein the source electrode and the drain electrode are separated by an area on the surface of the semiconductor layer. 14. The semiconductor device of claim 1, further comprising a conducting layer adjacent to one surface of the semiconducting layer and a dielectric layer adjacent to an opposite surface of the semiconducting layer. 15. A method of preparing an organic thin film transistor, said method comprising: providing a gate electrode; depositing a gate dielectric layer on a surface of the gate electrode; preparing a semiconductor layer adjacent to the gate dielectric layer opposite the gate electrode, said semiconductor layer comprising a compound of the formula: wherein Y is a hydrogen atom, a halogen atom, an alkyl group, and aryl group or a perfluoroether acyl group, p is at least three, and Rf is a perfluoroether group. 16. The method of claim 15 wherein said semiconductor layer comprises a compound of the formula: wherein each Rf is a perfluoroether group, and n is at least 3; and positioning a source electrode and a drain electrode on a surface of the semiconductor layer that is opposite the gate dielectric layer, wherein the source electrode and the drain electrode are separated from each other in an area on the surface of the semiconductor layer. 17. The method of claim 15, further comprising depositing a surface treatment layer between the gate dielectric layer and the semiconductor layer. 18. A method of preparing an organic thin film transistor, said method comprising: providing a gate electrode; depositing a gate dielectric layer on a surface of the gate electrode; positioning a source electrode and a drain electrode adjacent to the gate dielectric layer opposite the gate electrode, wherein the source electrode and the drain electrode are separated by an area over the gate dielectric layer; preparing a semiconductor layer on a surface of the source electrode, on the surface of the drain electrode, and in the area between the source electrode and the drain electrode, said semiconductor layer comprising a compound of the formula: wherein Y is a hydrogen atom, a halogen atom, an alkyl group, and aryl group or a perfluoroether acyl group, p is at least three, and Rf is a perfluoroether group. 19. The method of claim 18 wherein said semiconductor layer comprises a compound of the formula: wherein each Rf is a perfluoroether group, and n is at least 3. 20. The method of claim 19, said method further comprising depositing a surface treatment layer that contacts the surface of the gate dielectric layer opposite the gate electrode. 21. A Schottky diode comprising the device of claim 1, wherein a first metal is in contact with a first surface of said semiconductor, and a second metal in contact with a second surface of said semiconductor layer.
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