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A two-terminal silicon nanoribbon field-effect pH sensor
KTH, School of Biotechnology (BIO), Molecular Biotechnology.
KTH, School of Biotechnology (BIO), Molecular Biotechnology.ORCID iD: 0000-0002-0695-5188
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2010 (English)In: Applied Physics Letters, ISSN 0003-6951, E-ISSN 1077-3118, Vol. 97, no 26, 264102- p.Article in journal (Refereed) Published
Abstract [en]

This paper reports on a two-terminal silicon nanoribbon (SiNR) field-effect pH sensor operated in electrolyte. Observed experimentally and confirmed by modeling, the sensor is activated by self-gating with a gate bias set by the potential difference of the two terminals. The effect of this gate bias on the SiNR conductance is modulated by the potential drop over the electrical double layer (EDL) established on the SiNR surface, similarly to the threshold voltage modulation by EDL in a three-terminal SiNR field-effect transistor with an independent gate electrode. The potential drop over EDL is determined by the pH value of the electrolyte.

Place, publisher, year, edition, pages
2010. Vol. 97, no 26, 264102- p.
National Category
Atom and Molecular Physics and Optics
Identifiers
URN: urn:nbn:se:kth:diva-30568DOI: 10.1063/1.3532964ISI: 000285768100095Scopus ID: 2-s2.0-78650889881OAI: oai:DiVA.org:kth-30568DiVA: diva2:400984
Note
QC 20110301Available from: 2011-03-01 Created: 2011-02-28 Last updated: 2017-12-11Bibliographically approved

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Eriksson Karlström, Amelie

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