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Reduction of the Schottky barrier height on silicon carbide using Au nano-particles

Författare

Summary, in English

By the incorporation of size-selected Au nano-particles in Ti Schottky contacts on silicon carbide, we could observe considerably lower the barrier height of the contacts. This result could be obtained for both n- and p-type Schottky contacts using current-voltage and capacitance voltage measurements. For n-type Schottky contacts, we observed reductions of 0.19-0.25 eV on 4H-SiC and 0.15-0.17 eV on 6H-SiC as compared with particle-free Ti Schottky contacts. For p-type SiC, the reduction was a little lower with 0.02-0.05 eV on 4H- and 0.10-0.13 eV on 6H-SiC. The reduction of the Schottky barrier height is explained using a model with enhanced electric field at the interface due to the small size of the circular patch and the large difference of the barrier height between Ti and Au.

Publiceringsår

2002

Språk

Engelska

Sidor

1433-1440

Publikation/Tidskrift/Serie

Solid-State Electronics

Volym

46

Issue

9

Dokumenttyp

Artikel i tidskrift

Förlag

Elsevier

Ämne

  • Condensed Matter Physics
  • Electrical Engineering, Electronic Engineering, Information Engineering

Nyckelord

  • image force
  • silicon carbide
  • nano-particles
  • Schottky barrier height
  • lowering

Status

Published

ISBN/ISSN/Övrigt

  • ISSN: 0038-1101