Surface passivation function of indium-tin-oxide-based nanorod structural sensors

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Employing self-shadowing traits of an oblique-angle electron-beam deposition system, various indium tin oxide (ITO) nanorod arrays were deposited on a silicon substrate and used as extended-gate field-effect-transistor (EGFET) pH sensors. The length and morphology of the deposited ITO nanorod arrays could be changed and controlled under different deposition conditions. The ITO nanorod structural EGFET pH sensors exhibited high sensing performances owing to the larger sensing surface area. The sensitivity of the pH sensors with 150-nm-length ITO nanorod arrays was 53.96 mV/pH. By using the photoelectrochemical treatment of the ITO nanorod arrays, the sensitivity of the pH sensors with 150-nm-length passivated ITO nanorod arrays was improved to 57.21 mV/pH.

Original languageEnglish
Pages (from-to)8415-8418
Number of pages4
JournalApplied Surface Science
Volume258
Issue number21
DOIs
Publication statusPublished - 2012 Aug 15

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint Dive into the research topics of 'Surface passivation function of indium-tin-oxide-based nanorod structural sensors'. Together they form a unique fingerprint.

Cite this