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Electronics and FluidicsElectrical and Electronic Equipment

Soft Reverse Current-Voltage Characteristics in V2O5 Nanofiber Junctions

Authors: Gyu-Tae Kim; Jorg Muster; Marko Burghard; Siegmar Roth; MAX-PLANCK-INST FUER FESTKOERPERFORSCHUNG STUTTGART (GERMANY F R)
Abstract:
V2O5 nanofibers showed the rectifying current-voltage characteristics under an asymmetric contact configuration at room temperature, indicating the formation of a Schottky diode. The ideality factors as a Schottky diode were estimated to be 6.1 at the forward bias and 1.4 at the reverse bias. The larger current at the reverse bias defined by the negative voltage at the metal electrode may originate from the contribution of the tunneling via field emission or thermionic field emission. The ultimate geometric size of nanofibers enhances the influence of the tunneling mechanism and modifies the nano-scale Schottky diode, requiring more understanding in designing the nano-scale electronic devices with the metal contacts.

Limitations: APPROVED FOR PUBLIC RELEASE
Pages: 6
Report Date: NOV 2001
Report Number: P842210
Keywords relating to this report:
*METAL FIBERS
*Schottky barrier devices
CARBON NANOTUBES
ELECTRIC CURRENT
FIELD EMISSION
GERMANY
METAL CONTACTS
SEMICONDUCTOR JUNCTIONS
TUNNELING_ELECTRONICS_
VANADIUM COMPOUNDS
VOLTAGE
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