Abstract

A totally innovative electrolyte-gated field effect transistor, embedding a phospholipid film at the interface between the organic semiconductor and the gating solution, is described. The electronic properties of OFETs including a phospholipid film are studied in both pure water and in an electrolyte solution and compared to those of an OFET with the organic semiconductor directly in contact with the gating solution. In addition, to investigate the role of the lipid layers in the charge polarization process and quantify the field-effect mobility, impedance spectroscopy was employed. The results indicate that the integration of the biological film minimizes the penetration of ions into the organic semiconductor thus leading to a capacitive operational mode as opposed to an electrochemical one. The OFETs operate at low voltages with a field-effect mobility in the 10^-3 cm^2 V^-1 s^-1 range and an on/off current ratio of 10^3. This achievement opens perspectives to the development of FET biosensors potentially capable to operate in direct contact with physiological fluids.

Autore Pugliese

• Palazzo Gerardo , Torsi Luisa , Ligonzo Teresa

Tutti gli autori

• PALAZZO G.;TORSI L.;MAGLIULO M.;LIGONZO T.

Titolo volume/Rivista

Non Disponibile

Anno di pubblicazione

2012

ISSN

1566-1199

ISBN

Non Disponibile

Numero di citazioni Wos

34

Ultimo Aggiornamento Citazioni

Non Disponibile

Numero di citazioni Scopus

37

Ultimo Aggiornamento Citazioni

Non Disponibile

Settori ERC

Non Disponibile

Codici ASJC

Non Disponibile