Applied Physics Letters · 2011 · 47 citations · 23 references
EngineeringMaterials EngineeringMaterials ScienceElectronic MaterialsMaterials ChemistrySemiconductor DevicesMetal-semiconductor ContactsNanostructured SurfacesOrganic Electronic MaterialsOrganic SemiconductorsSemiconductor SurfacesThin-film TransistorsAtomic Force Microscopy AnalysisContact ResistanceGold ElectrodesOrganic ElectronicsOrganic Field-effect TransistorsOrganic NanoelectronicsOrganic Thin-film TransistorsSmall-molecule Organic Semiconductors
Organic field-effect transistors (OFETs) were prepared and analyzed by inserting various thickness of 4,4′,4″-tris[3-methylphenyl(phenyl)amino] triphenylamine (m-MTDATA) between pentacene and gold electrodes as a hole injection layer. These OFETs showed a significant enhancement of hole mobility comparing to the corresponding single layer device. The interfacial morphologies of pentacene and pentacene/m-MTDATA contact were characterized by atomic force microscopy. The hole mobility improvement of OFETs was attributed to an intermediate energy level formed between pentacene and gold heterojunction when inserting an ultrathin m-MTDATA layer, leading to a remarkable reduction of contact resistance at the metal-organic interface.
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Large-scale complementary integrated circuits based on organic transistors
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Engineering, Computer Engineering, Electrical Engineering +14
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