Conducting Polymer based Field-Effect Transistor for Volatile Organic Compound Sensing

Panchal, A and Malik, A and Nath, B and Ramamurthy, PC (2022) Conducting Polymer based Field-Effect Transistor for Volatile Organic Compound Sensing. In: 2022 IEEE International Conference on Flexible and Printable Sensors and Systems, FLEPS 2022, 10 - 13 July 2022, Vienna.

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Abstract

This work presents the sensing ability demonstrated by thiophene derivative in an OFET architecture. The detection ability of the fabricated device was tested in real-time for acetone at various intervals manifesting as variation in drain currents. 1x1 cm2 90 nm thermal oxide substrate were used for lithographically patterning of interdigitated source-drain structures with a channel length of 40um. A reduction in drain current by ~35 and charge carrier mobility by ~ 53 was observed attributed to the sensing action performed by thiophene derivative film by acetone vapor interaction. The photoluminescence spectra corroborate the specific interaction of acetone molecules with sensing element.

Item Type:	Conference Paper
Publication:	FLEPS 2022 - IEEE International Conference on Flexible and Printable Sensors and Systems, Proceedings
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Keywords:	Acetone; Carrier mobility; Conducting polymers; MEMS; Organic field effect transistors; Thiophene, Detection ability; Fabricated device; Field-effect transistor; Organic field-effect transistors; Polymer based; Real- time; Sensing abilities; Thermal oxide substrates; Thiophene derivatives; VOC sensor, Drain current
Department/Centre:	Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	05 Oct 2022 09:02
Last Modified:	05 Oct 2022 09:02
URI:	https://eprints.iisc.ac.in/id/eprint/77053

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