Enhancement of the ionic response of field effect transducers using porous silicon

Enhancement of the ionic response of field effect transducers using porous silicon

Oxidised porous silicon samples prepared from highly and weakly doped p-type silicon substrates, have been functionalised with calix[4]arene (CA) molecules. They have been used for sodium detection as electrolyte/insulator/silicon (EIS) structures. An over Nernstian behaviour was observed and correl...

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Veröffentlicht in:Talanta (Oxford) 2001-12, Vol.55 (5), p.951-958
Hauptverfasser: Zairi, S, Martelet, C, Jaffrezic-Renault, N, Vocanson, F, Lamartine, R, M'ghaı̈eth, R, Maaref, H, Gamoudi, M
Format: Artikel
Sprache:eng
Schlagworte:
Analytical chemistry
Calixarene
Chemistry
Exact sciences and technology
General, instrumentation
Lifetime
Over Nernstian
Porous silicon
Sensitivity
Sodium detection
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Beschreibung
Zusammenfassung:Oxidised porous silicon samples prepared from highly and weakly doped p-type silicon substrates, have been functionalised with calix[4]arene (CA) molecules. They have been used for sodium detection as electrolyte/insulator/silicon (EIS) structures. An over Nernstian behaviour was observed and correlated with physical parameters of porous silicon samples (porosity, resistivity). A generalised Nernstian equation was proposed in order to describe this property. CA functionalised EIS structures based on porous silicon present higher lifetime compared to flat structures.
ISSN:0039-9140
1873-3573
DOI:10.1016/S0039-9140(01)00500-8