Gas Sensors Based on Polymer Field-Effect Transistors

Aifeng Lv; Yong Pan; Lifeng Chi

doi:10.3390/s17010213

Gas Sensors Based on Polymer Field-Effect Transistors

Sensors (Basel). 2017 Jan 22;17(1):213. doi: 10.3390/s17010213.

Authors

Aifeng Lv¹, Yong Pan², Lifeng Chi^{3

4}

Affiliations

¹ Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Str. 10, Münster 48149, Germany. lva@uni-muenster.de.
² Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Str. 10, Münster 48149, Germany. pany@uni-muenster.de.
³ Physikalisches Institut and Center for Nanotechnology (CeNTech), Universität Münster, Wilhelm-Klemm-Str. 10, Münster 48149, Germany. chilf@suda.edu.cn.
⁴ Jiangsu Key Laboratory for Carbon-Based Functional Materials & Devices, Functional Nano and Soft Materials Laboratory (FUNSOM), Soochow University, Renai Rd. 199, Suzhou 215123, China. chilf@suda.edu.cn.

Abstract

This review focuses on polymer field-effect transistor (PFET) based gas sensor with polymer as the sensing layer, which interacts with gas analyte and thus induces the change of source-drain current (ΔI_SD). Dependent on the sensing layer which can be semiconducting polymer, dielectric layer or conducting polymer gate, the PFET sensors can be subdivided into three types. For each type of sensor, we present the molecular structure of sensing polymer, the gas analyte and the sensing performance. Most importantly, we summarize various analyte-polymer interactions, which help to understand the sensing mechanism in the PFET sensors and can provide possible approaches for the sensor fabrication in the future.

Keywords: OFETs; gas analyte; polymer; sensing mechanism; sensor.

Publication types

Review