Pd/Au/SiC nanostructured diodes for nanoelectronics: Room temperature electrical properties

Isodiana Crupi, Francesco Ruffino, Maria Grazia Grimaldi, Alessia Irrera, Isodiana Crupi

Risultato della ricerca: Articlepeer review

37 Citazioni (Scopus)

Abstract

Pd/Au/SiC nanostructured Schottky diodes were fabricated embedding Au nanoparticles (NPs) at the metalsemiconductor interface of macroscopic Pd/SiC contacts. The Au NPs mean size was varied controlling the temperature and time of opportune annealing processes. The electrical characteristics of the nanostructured diodes were studied as a function of the NPs mean size. In particular, using the standard theory of thermoionic emission, we obtained the effective Schottky barrier height (SBH) and the effective ideality factor observing their dependence on the annealing time and temperature being the signature of their dependence on the mean NP size. Furthermore, plotting the effective SBH as a function of the effective ideality factor we observe a linear correlation, indicating that the Au NPs act as lateral inhomogeneities in the Schottky diodes according to the Tungs model. Therefore, we can control the size, fraction of covered area, and surface density of such intentionally introduced inhomogeneities. The application of the Tungs model for the electronic transport in inhomogeneous Schottky contacts allow us to obtain, in particular, the homogeneous SBH. These nanostructured diodes are proposed as possible components of integrated complex nanoelectronic devices. © 2006 IEEE.
Lingua originaleEnglish
pagine (da-a)414-421
Numero di pagine8
RivistaIEEE Transactions on Nanotechnology
Volume9
Stato di pubblicazionePublished - 2010

All Science Journal Classification (ASJC) codes

  • Computer Science Applications
  • Electrical and Electronic Engineering

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