Detection of Volatile Organic Compounds Using Solution Processed Organic Field-Effect Transistors


Garlapati S. K., Faraji S., Tate D., Rahmanudin A., Valliappan P., Patti A., ...More

6th Conference on Microactuators, Microsensors and Micromechanisms, MAMM 2022, Hyderabad, India, 2 - 04 December 2022, vol.126, pp.310-322 identifier

  • Publication Type: Conference Paper / Full Text
  • Volume: 126
  • Doi Number: 10.1007/978-3-031-20353-4_27
  • City: Hyderabad
  • Country: India
  • Page Numbers: pp.310-322
  • Keywords: Alcohols, Gas sensors, Ketones, OFETs, Sensing mechanisms, VOCs
  • Istanbul Technical University Affiliated: No

Abstract

We report chemical sensors based on solution processed organic field-effect transistors (OFETs) for detecting volatile organic compounds (VOCs). The OFETs were prepared on flexible plastic substrates and operated at low voltages (≤3 V) with high performance. These OFETs can be used to detect a range of VOCs, including alcohols and ketones. The sensitivity of these devices depends on the polarity of the analytes, and more hydrophobic analytes with longer alkyl chains show higher sensitivities than those with shorter alkyl chains. Arrays of these devices are suitable for portable sensor applications, such as environmental monitoring, food quality monitoring, and medical diagnostics.