Digital-Inverter Amine Sensing via Synergistic Responses by n and p Organic Semiconductors

Chemiresistors and sensitive organic field‐effect transistors (OFETs) have been substantially developed as cheap, scalable, and versatile sensing platforms. While new materials are expanding OFET sensing capabilities, the device architectures have changed little. Higher order logic circuits utilizin...

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Bibliographic Details
Published in:Advanced functional materials 2011-11, Vol.21 (22), p.4314-4319
Main Authors: Tremblay, Noah J., Jung, Byung Jun, Breysse, Patrick, Katz, Howard E.
Format: Article
Language:English
Subjects:
Amines
Analog to digital converters
Circuits
Detection
Digital
organic field-emission transistors (OFETs)
Organic semiconductors
Platforms
Semiconductors
sensors
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Summary:Chemiresistors and sensitive organic field‐effect transistors (OFETs) have been substantially developed as cheap, scalable, and versatile sensing platforms. While new materials are expanding OFET sensing capabilities, the device architectures have changed little. Higher order logic circuits utilizing OFETs sensitive to amine vapors are presented. The circuits depend on the synergistic responses of paired p‐ and n‐channel organic semiconductors, including a rare analyte‐induced current increase by the n‐channel semiconductor. This is the first step towards ‘intelligent sensors’ that utilize analog signal changes in sensitive OFETs to produce direct digital readouts suitable for further logic operations. Higher‐order logic circuits utilizing organic field‐effect transistors (OFETs) sensitive to amine vapors are presented The circuits utilize synergistic responses of paired p‐ and n‐channel organic semiconductors, including a rare analyte‐induced current increase by the n‐channel semiconductor. This is the first step towards sensors that utilize analog signal changes in sensitive OFETs to produce direct digital readouts suitable for further logic operations.
ISSN:1616-301X
1616-3028
1616-3028
DOI:10.1002/adfm.201101324