Current Instability for Silicon Nanowire Field-Effect Sensors Operating in Electrolyte with Platinum Gate Electrodes
2011 (English)In: Electrochemical and solid-state letters, ISSN 1099-0062, E-ISSN 1944-8775, Vol. 14, no 7, J34-J37 p.Article in journal (Refereed) Published
Current instability is observed for silicon nanowire field-effect transistors operating in electrolytes with Pt gate electrodes. A comparative study involving an Ag/AgCl-reference gate electrode reveals that the effect results from a drift in the potential at the Pt-electrode/electrolyte interface. In a phosphate buffer saline of pH 7.4, the stabilization of the potential of the Pt electrode was found to require approximately 1000 s. A concurrent potential drift, with a comparable time constant, occurring at the electrolyte/oxidized-nanowire interface rendered a complex device current response which complicated the interpretation of the results.
Place, publisher, year, edition, pages
2011. Vol. 14, no 7, J34-J37 p.
Engineering and Technology Inorganic Chemistry
Research subject Chemistry with specialization in Inorganic Chemistry; Engineering Science with specialization in Electronics
IdentifiersURN: urn:nbn:se:uu:diva-154111DOI: 10.1149/1.3584082ISI: 000290276400027OAI: oai:DiVA.org:uu-154111DiVA: diva2:419378