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Effects of the surface condition of the substrates on the electrical characteristics of 4H-SiC MOSFETs

  • T. Ohshima
  • , S. Onoda
  • , T. Kamada
  • , K. Hotta
  • , K. Kawata
  • , O. Eryu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Metal Oxide Semiconductor Field Effect Transistors (MOSFETs) were fabricated on p-type epitaxial 4H-SiC substrates with different surface conditions and these electrical characteristics were compared. The MOSFETs on Chemical Mechanical Polished substrates showed the drain current of the order of 10-12A at a gate voltage of 0 V, and the value of the drain current increased with increasing the surface roughness of substrates. With decreasing the surface roughness of substrates, the values of the threshold voltage decreased and the quality of gate oxide became better.

Original languageEnglish
Title of host publicationSilicon Carbide and Related Materials 2008
Subtitle of host publicationECSCRM 2008
PublisherTrans Tech Publications Ltd
Pages781-784
Number of pages4
ISBN (Print)9780878493340
DOIs
Publication statusPublished - 2009
Externally publishedYes

Publication series

NameMaterials Science Forum
Volume615 617
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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