Fa-brication and characterization of a molecular adhesive layer for micro- and nanofabricated electrochemical electrodes

TGI Ling, Marc Beck, Richard Bunk, E Forsen, Jonas Tegenfeldt, Alexei Zakharov, Lars Montelius

Research output: Contribution to journalArticlepeer-review

15 Citations (SciVal)

Abstract

In the microelectronics industry, gold electrodes on silicon dioxide are produced using an adhesive layer of chromium or titanium. This method is applicable whenever a dry environment is present. However, when such an electrode is exposed to an electrolyte a galvanic cell is formed and the less noble metal will dissolve and eventually destroy the electrode. We describe here how a monolayer of mercaptopropyl-trimethoxysilane (MPTS) can be used as an adhesive. The layer can be structured lithographically making gold electrodes in the micro- and nano-range applicable for use in electrochemistry. The properties of the MPTS layer were investigated with photoelectron microscopy, atomic force microscopy and the electrochemical performance of the gold electrodes was determined by cyclic voltammetry. (C) 2003 Elsevier Science B.V. All rights reserved.
Original languageEnglish
Pages (from-to)887-892
JournalMicroelectronic Engineering
Volume67-8
DOIs
Publication statusPublished - 2003

Subject classification (UKÄ)

  • Natural Sciences
  • Physical Sciences
  • Condensed Matter Physics

Keywords

  • photoelectron spectroscopy
  • electrochemical sensor
  • structured monolayer
  • gold silicon dioxide linkage
  • adhesive monolayer

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