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 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.
Zairi
S
S
IFOS laboratory, UMR CNRS 5621, 36 Ave Guy de Collongue, Ecole Centrale Lyon, BP 163, 69131 Ecully Cedex, France.
Martelet
C
C
Jaffrezic-Renault
N
N
Vocanson
F
F
Lamartine
R
R
M'ghaïeth
R
R
Maaref
H
H
Gamoudi
M
M