Contact effects in organic thin-film transistor sensors

被引：41

作者：

Torsi, Luisa ^{[1
]}

Marinelli, Francesco ^{[1
]}

Angione, M. Daniela ^{[1
]}

Dell'Aquila, Antonio ^{[1
]}

Cioffi, Nicola ^{[1
]}

De Giglio, Elvira ^{[1
]}

Sabbatini, Luigia ^{[1
]}

机构：

[1] Univ Bari, Dipartimento Chim, I-70126 Bari, Italy

来源：

ORGANIC ELECTRONICS | 2009年 / 10卷 / 02期

关键词：

Thin films; Transistors; Chemo-bio sensors; Conducting polymers; Molecular electronics; FIELD-EFFECT TRANSISTORS; RESISTANCE; MOBILITY;

D O I：

10.1016/j.orgel.2008.11.009

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Contact effects in organic thin-film transistors (OTFTs) sensors are here investigated specifically respect to the gate field-induced sensitivity enhancement of more than three orders of magnitude seen in a DH alpha 6T OTFT sensor exposed to 1-butanol vapors. This study shows that such a sensitivity enhancement effect is largely ascribable to changes occurring to the transistor channel resistance. Effects, such as the changes in contact resistance, are seen to influence the low gate voltage regime where the sensitivity is much lower. (C) 2008 Elsevier B.V. All rights reserved.

引用

收藏

页码：233 / 239

页数：7

相关论文

共 28 条

[1] Enzymatic sensing with organic electrochemical transistors [J].

Bernards, Daniel A. ;

Macaya, Daniel J. ;

Nikolou, Maria ;

DeFranco, John A. ;

Takamatsu, Seiichi ;

Malliaras, George G. .

JOURNAL OF MATERIALS CHEMISTRY, 2008, 18 (01) :116-120

[2] The synthesis of novel 3-substituted pyrrole monomers possessing chiral side groups: a study of their chemical polymerisation and the assessment of their chiral discrimination properties [J].

Costello, BPJD ;

Ratcliffe, NM ;

Sivanand, PS .

SYNTHETIC METALS, 2003, 139 (01) :43-55

[3] Electronic sensing of vapors with organic transistors [J].

Crone, B ;

Dodabalapur, A ;

Gelperin, A ;

Torsi, L ;

Katz, HE ;

Lovinger, AJ ;

Bao, Z .

APPLIED PHYSICS LETTERS, 2001, 78 (15) :2229-2231

[4] Field-effect transistors comprising molecular beam deposited α,ω-di-hexyl-hexathienylene and polymeric insulator [J].

Dimitrakopoulos, CD ;

Furman, BK ;

Graham, T ;

Hegde, S ;

Purushothaman, S .

SYNTHETIC METALS, 1998, 92 (01) :47-52

[5] ORGANIC TRANSISTORS - 2-DIMENSIONAL TRANSPORT AND IMPROVED ELECTRICAL CHARACTERISTICS [J].

DODABALAPUR, A ;

TORSI, L ;

KATZ, HE .

SCIENCE, 1995, 268 (5208) :270-271

[6]

DODABALAPUR A, 2007, SPIE OPTICS PHOTONIC

[7] MOLECULAR ENGINEERING OF ORGANIC SEMICONDUCTORS - DESIGN OF SELF-ASSEMBLY PROPERTIES IN CONJUGATED THIOPHENE OLIGOMERS [J].

GARNIER, F ;

YASSAR, A ;

HAJLAOUI, R ;

HOROWITZ, G ;

DELOFFRE, F ;

SERVET, B ;

RIES, S ;

ALNOT, P .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 1993, 115 (19) :8716-8721

[8] Relationship between molecular structure and electrical performance of oligothiophene organic thin film transistors [J].

Halik, M ;

Klauk, H ;

Zschieschang, U ;

Schmid, G ;

Ponomarenko, S ;

Kirchmeyer, S ;

Weber, W .

ADVANCED MATERIALS, 2003, 15 (11) :917-+

[9] Nonlinear charge injection in organic field-effect transistors [J].

Hamadani, BH ;

Natelson, D .

JOURNAL OF APPLIED PHYSICS, 2005, 97 (06)

[10]

Horowitz G, 2000, ADV MATER, V12, P1046, DOI 10.1002/1521-4095(200007)12:14<1046::AID-ADMA1046>3.0.CO