Patent ID: 8384409

Claim:
A chemical sensor, comprising: a substrate; a gate electrode isolated from drain and source electrodes by gate dielectric; an organic ultra-thin semiconductor thin film arranged with respect to said gate, source and drain electrodes to act as a conduction channel in response to appropriate gate, source and drain potentials, said organic ultra-thin film being permeable to a chemical analyte of interest and consisting of one or a few atomic or molecular monolayers of material, wherein said thin film comprises one of the group consisting of copper phthalocyanine (CuPc), CuC 32 N 8 H 16 , cobalt phthalocyanine (CoPc) and CoC 32 N 8 H 16 , metal-free phthalocyanine (H 2 Pc), C 32 N 8 H 18 , and Copper-Hexadecafluorophthalocyanine (F 16 CuPc or F 16 CuC 32 N 8 H 16 ).