Semiconducting ink formulation

Details Semiconducting ink formulation Semiconducting ink formulation

2008-10-09

2011-11-08

Kopec, Mark (Department: 1761)

Compositions

Electrically conductive or emissive compositions

Reexamination Certificate

active

08052895

ABSTRACT:
A semiconducting ink formulation comprises a semiconducting material; a first solvent; and a second solvent which is miscible with the first solvent, has a surface tension equal to or greater than the surface tension of the first solvent, and in which the semiconducting material has a solubility of less than 0.1 wt % at room temperature The surface tension of the ink formulation can be controlled, allowing the formation of semiconducting layers in organic thin film transistors, including top-gate transistors.

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Shin et al “Effect of alkyl side-chain length and solvent on the luminescent characteristics of poly(3-n-alkylthiophene)”, Synthetic Metals 140 (2004) 177-181.

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