n-Type thiophene semiconductors

Details n-Type thiophene semiconductors n-Type thiophene semiconductors

2008-05-01

2010-11-30

Kopec, Mark (Department: 1796)

Compositions

Electrically conductive or emissive compositions

C549S030000

Reexamination Certificate

active

07842198

ABSTRACT:
The new fluorocarbon-functionalized and/or heterocycle-modified polythiophenes, in particular, α,ω-diperfluorohexylsexithiophene DFH-6T can be straightforwardly prepared in high yield and purity. Introduction of such modifications to a thiophene core affords enhanced thermal stability and volatility, and increased electron affinity versus the unmodified compositions of the prior art. Evaporated films behave as n-type semiconductors, and can be used to fabricate thin film transistors with FET mobilities ˜0.01 cm2/Vs—some of the highest reported to date for n-type organic semiconductors.

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