Research on Gas Sensing Performance and Application of TMA Sensor Based on GaN/Ti3C2Tx

被引：0

作者：

Han D. ^{[1
]}

Hong Y.-T. ^{[1
]}

Liu Z.-H. ^{[1
]}

Duan Q. ^{[1
]}

Li D.-H. ^{[1
]}

Wang Y. ^{[1
]}

Shi J.-X. ^{[1
]}

Sang S.-B. ^{[1
]}

机构：

[1] College of Electronic Information and Optical Engineering, Taiyuan University of Technology, Shanxi, Taiyuan

来源：

Tien Tzu Hsueh Pao/Acta Electronica Sinica | 2024年 / 52卷 / 04期

基金：

中国国家自然科学基金;

关键词：

contactless detection; GaN/Ti[!sub]3[!/sub]C[!sub]2[!/sub]T[!sub]x[!/sub; gas sensor; room temperature; trimethylamine;

D O I：

10.12263/DZXB.20231180

中图分类号：

学科分类号：

摘要：

In this paper, a new type of gallium nitride (GaN) /Ti3C2Tx composite material was synthesized by solvo⁃ thermal method and nitriding method, and the sensing characteristics of trimethylamine (TMA) gas sensor based on GaN/ Ti3C2Tx composite were studied. Through a series of characterization methods, the morphology and elemental composition of the composites were analyzed, and the successful composite of GaN and Ti3C2Tx was confirmed. The results show that GaN/Ti3C2Tx sensor can efficiently detect 1~200 ppm TMA gas at room temperature, and the detection limit of TMA is re⁃ duced from 10 ppm to 1 ppm compared with pure GaN sensor. In addition, the gas sensing results of the composite sensor further confirm its good anti-interference characteristics and long-term stability. The gas-sensitive mechanism of GaN/ Ti3C2Tx composite sensor and the reason of its improved gas-sensitive performance compared with pure GaN sensor are ex⁃ plained by using the surface depletion layer model. Finally, a contactless TMA gas detection device was developed in this paper, and the test results show that the device is expected to achieve efficient real-time detection of exhaled air in patients with liver and kidney disease, and has great application potential in early screening of liver and kidney diseases. © 2024 Chinese Institute of Electronics. All rights reserved.

引用

页码：1389 / 1398

页数：9

共 36 条

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