期刊
BIOSENSORS & BIOELECTRONICS
卷 21, 期 5, 页码 782-788出版社
ELSEVIER ADVANCED TECHNOLOGY
DOI: 10.1016/j.bios.2005.01.016
关键词
sensing organic thin-film transistors; sensing electronics; conducting polymers
The effects of the exposure of organic thin-film transistors, comprising different organic semiconductors and gate dielectrics, to 1-pentanol are investigated. The transistor sensors exhibited an increase or a decrease of the transient source-drain current in the presence of the analyte, most likely as a result of a trapping or of a doping process of the organic active layer. The occurrence of these two effects, that can also coexist, depend on the gate-dielectric/organic semiconductor interface and on the applied gate field. Evidence of a systematic and sizable response enhancement for an OTFT sensor operated in the enhanced mode is also presented. (c) 2005 Elsevier B.V. All rights reserved.
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