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Highly sensitive gas sensing platforms based on field effect Transistor-A review.

Pan Zhang1, Yin Xiao2, Jingjing Zhang1

  • 1School of Science, Tianjin Key Laboratory of Molecular Optoelectronic Science, Department of Chemistry, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin, 300072, PR China.

Analytica Chimica Acta
|June 13, 2021
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Summary

Field-effect transistor (FET) sensors offer sensitive, reliable, and low-power gas detection for environmental and medical uses. This review covers advances in FET gas sensors using various materials and optimizing strategies.

Keywords:
Field effect transistorGas sensors

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Area of Science:

  • Materials Science and Engineering
  • Chemical Sensors
  • Nanotechnology

Background:

  • Highly selective, sensitive, and fast gas sensing is crucial for environmental protection, industrial safety, and medical diagnostics.
  • Field-effect transistor (FET) sensors are attractive for gas sensing due to their small size, high sensitivity, reliability, and low energy consumption.

Purpose of the Study:

  • To provide a comprehensive review of recent advances in FET gas sensors.
  • To discuss various materials, sensing mechanisms, optimization strategies, and future directions in FET-based gas sensing.

Main Methods:

  • Review of existing literature on FET gas sensors.
  • Analysis of sensor structures and gas-sensing mechanisms.
  • Discussion of optimizing strategies for sensing performance and response parameters.

Main Results:

  • Detailed examination of FET gas sensors based on carbon nanotubes, silicon carbide, silicon, metal oxides, graphene, transition metal dichalcogenides, and 2D black phosphorus.
  • Presentation of key advances in gas sensing performance for these materials.
  • Discussion of the shortcomings of current materials and technologies.

Conclusions:

  • FET gas sensors represent a promising technology for various applications.
  • Further research is needed to overcome material limitations and enhance sensing capabilities.
  • The review proposes future development directions for advanced FET gas sensing.