The effect of various solvents on the back channel of solution-processed In-Ga-Zn-O thin-film transistors intended for biosensor applications

Si Joon Kim, Joohye Jung, Doo Hyun Yoon, Hyun Jae Kim

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

This study investigated the effects of exposing solution-processed In-Ga-Zn-O (IGZO) thin-film transistors (TFTs), intended for biosensor applications, to various solvents. Various solvents, such as the nonpolar solvent chlorobenzene and the polar solvents ethanol and deionized (DI) water, were dropped and adsorbed on exposed IGZO channel surfaces. All IGZO TFT devices exhibited a negative threshold voltage shift and a sub-threshold swing degradation, without an accompanying degradation in field-effect mobility. These variations depended on the dielectric constant of the solvents; with the exception of the IGZO TFT device exposed to DI water, they all gradually returned to their initial states.

Original languageEnglish
Article number035102
JournalJournal of Physics D: Applied Physics
Volume46
Issue number3
DOIs
Publication statusPublished - 2013 Jan 23

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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