Phospholipid film in electrolyte-gated organic field-effect transistors

被引：52

作者：

Cotrone, Serafina ^{[2
]}

Ambrico, Marianna ^{[3
]}

Toss, Henrik ^{[4
]}

Angione, M. Daniela ^{[2
]}

Magliulo, Maria ^{[2
]}

Mallardi, Antonia ^{[5
]}

Berggren, Magnus ^{[4
]}

Palazzo, Gerardo ^{[2
]}

Horowitz, Gilles ^{[6
]}

Ligonzo, Teresa ^{[1
]}

Torsi, Luisa ^{[2
]}

机构：

[1] Univ Bari Aldo Moro, Dipartimento Fis, I-70126 Bari, Italy

[2] Univ Bari Aldo Moro, Dipartimento Chim, I-70126 Bari, Italy

[3] CNR, Sez Terr Bari, IMIP, I-70126 Bari, Italy

[4] ITN Linkoping Univ, SE-60174 Norrkoping, Sweden

[5] CNR, IPCF, I-70126 Bari, Italy

[6] Univ Paris Diderot, ITODYS, F-75205 Paris 13, France

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 04期

关键词：

Electrolyte-gated field-effect transistors; Phospholipid layers; Poly-3-hexyl-thiophene (P3HT); Electrochemical impedance spectroscopy; HYSTERESIS; MEMBRANE;

D O I：

10.1016/j.orgel.2012.01.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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. (c) 2012 Elsevier B.V. All rights reserved.

引用

页码：638 / 644

页数：7

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