Tuning of operation mode of ZnO nanowire field effect transistors by solvent-driven surface treatment

Woojin Park, Woong Ki Hong, Gunho Jo, Gunuk Wang, Minhyeok Choe, Jongsun Maeng, Yung Ho Kahng, Takhee Lee

Research output: Contribution to journalArticlepeer-review

24 Citations (Scopus)

Abstract

We report on the adjustment of the operation voltage in ZnO nanowire field effect transistors (FETs) by a simple solvent treatment. We have observed that by submerging ZnO nanowires in isopropyl alcohol (IPA), the surface of the ZnO nanowires is etched, generating surface roughness, and their defect emission peak becomes stronger. In particular, ZnO nanowire FETs before IPA treatment operate in the depletion-mode, but are converted to the enhancement-mode with a positive shift of threshold voltage after submersion in IPA. This solvent treatment can be a useful method for controlling the operation mode of ZnO nanowire FETs for wide applications of nanowire-based electronic devices and circuits.

Original languageEnglish
Article number475702
JournalNanotechnology
Volume20
Issue number47
DOIs
Publication statusPublished - 2009
Externally publishedYes

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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