发明名称 |
Ultra-thin organic TFT chemical sensor, making thereof, and sensing method |
摘要 |
An embodiment of the invention is an organic thin film transistor chemical sensor. The sensor includes a substrate. A gate electrode is isolated from drain and source electrodes by gate dielectric. An organic ultra-thin semiconductor thin film is arranged with respect to the gate, source and drain electrodes to act as a conduction channel in response to appropriate gate, source and drain potentials. The organic ultra-thin film is permeable to a chemical analyte of interest and consists of one or a few atomic or molecular monolayers of material. An example sensor array system includes a plurality of sensors of the invention. In a preferred embodiment, a sensor chip having a plurality of sensors is mounted in a socket, for example by wire bonding. The socket provides thermal and electrical interference isolation for the sensor chip from associated sensing circuitry that is mounted on a common substrate, such as a PCB (printed circuit board). A method of operating an organic thin film transistor chemical sensor exposes the sensor to a suspected analyte. A low duty cycle voltage pulse train is applied to the gate electrode to reduce baseline drift while sensing for a conduction channel change.
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申请公布号 |
US8384409(B2) |
申请公布日期 |
2013.02.26 |
申请号 |
US20080597976 |
申请日期 |
2008.05.05 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA;KUMMEL ANDREW C.;YANG DENGLIANG;TROGLER WILLIAM C.;GREDIG THOMAS |
发明人 |
KUMMEL ANDREW C.;YANG DENGLIANG;TROGLER WILLIAM C.;GREDIG THOMAS |
分类号 |
G01R31/02 |
主分类号 |
G01R31/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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