Patent ID: 6768132
Filing Date: 2004-07-27
Classification: B82Y,H01B,H01L,Y10S

Abstract:
An organic thin film transistor (OTFT) comprising a self-assembled monolayer interposed between a gate dielectric and an organic semiconductor layer, the monolayer being a product of a reaction between the gate dielectric and a precursor to the self-assembled monolayer, the precursor comprising a composition having the formula:Xâ€”Yâ€”Zn, wherein X is H or CH3; Y is a linear or branched C5-C50 aliphatic or cyclic aliphatic connecting group, or a linear or branched C8-C50 group comprising an aromatic group and a C3-C44 aliphatic or cyclic aliphatic connecting group; Z is selected from â€”PO3H2, â€”OPO3H2, benzotriazolyl (â€”C6H4N3), benzotriazolylcarbonyloxy (â€”OC(&boxH;O)C6H4N3), benzotriazolyloxy (â€”Oâ€”C6H4N3), benzotriazolylamino (â€”NHâ€”C6H4N3), â€”CONHOH, â€”COOH, â€”OH, â€”SH, â€”COSH, â€”COSeH, â€”C5H4N, â€”SeH, â€”SO3H, â€”NC, â€”SiCl(CH3)2, â€”SiCl2CH3, amino, and phosphinyl; and n is 1, 2, or 3 provided that n=1 when Z is â€”SiCl(CH3)2 or â€”SiCl2CH3; and wherein the organic semiconductor layer comprises a material selected from: an acene, substituted with at least one electron-donating group, halogen atom, or a combination thereof, or a benzo-annellated acene or polybenzo-annellated acene, which optionally is substituted with at least one electron-donating group, halogen atom, or a combination thereof.