Nonlinear charge injection in organic field-effect transistors

Abstract

Transport properties of a series of poly(3-hexylthiophene) organic field effect transistors with Cr, Cu and Au source/drain electrodes were examined over a broad temperature range. The current-voltage characteristics of the injecting contacts are extracted from the dependence of conductance on channel length. With reasonable parameters, a model of hopping injection into a disordered density of localized states, with emphasis on the primary injection event, agrees well with the field and the temperature dependence of the data over a broad range of temperatures and gate voltages.

7 pages, 7 figures, sub. to J. Appl. Phys

References in corpus (3)

• Theory of the field-effect mobility in amorphous organic transistors
• Temperature-dependent contact resistances in high-quality polymer field-effect transistors
• Gated nonlinear transport in organic polymer field effect transistors

Cited by in corpus (6)

• Controlling charge injection in organic field-effect transistors using self-assembled monolayers
• Doping dependent charge injection and band alignment in organic field-effect transistors
• Extracting contact effects in organic field-effect transistors
• Concentration-dependent mobility in organic field-effect transistors probed by infrared spectromicroscopy of the charge density profile
• Roughness-induced energetic disorder at the metal/organic interface
• Interfacial charge transfer in nanoscale polymer transistors