Charge transfer effects in organic field-effect transistors containing a donor/acceptor heterojunction

被引：24

作者：

Videlot-Ackermann, C. ^{[1
]}

Ackermann, J. ^{[1
]}

Fages, F. ^{[1
]}

机构：

[1] Univ Mediterranee, CNRS, UMR 6114, Grp Chim Organ & Mat Mol GCOM2,Fac Sci Luminy, F-13288 Marseille 09, France

来源：

SYNTHETIC METALS | 2007年 / 157卷 / 13-15期

关键词：

organic heterojunction; phthalocyanine; TCNQ; field-effect transistors;

D O I：

10.1016/j.synthmet.2007.06.002

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Heterojunction organic field-effect transistors (OTFTs) based on copper phthalocyanine (CuPc) as p-type and on copper hexadecafluorophthalocyanine (F16CuPc) or 7,7,8,8-tetracyano-p-quinodimethane (TCNQ) as n-types were fabricated and studied. They were shown to operate in unipolar mode where hole current was recorded with values approaching those of CuPc-based single-layer device. However, due to a charge transfer phenomenon between CuPc and F16CuPc, the occurrence of a build-in electrical field at the CuPc/F16CuPc interface is shown to influence the transport properties at low drain-source voltages and to induce a non-ideal ohrnic behavior in OTFT characteristics. This effect is not observed in the case of CuPc/TCNQ because of a larger energy difference between HOMO and LUMO energy levels of CuPc and TCNQ, respectively. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：551 / 557

页数：7

共 26 条

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