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Flexible self-powered ammonia sensor based on Ce-ZnO composite film
Author(s): Si Wang; Huiling Tai; Guangzhong Xie; Yuanjie Su; Xiaosong Du; Yadong Jiang
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Paper Abstract

In this work, a flexible self-powered ammonia (NH3) sensing system based on a vertical contact-separate mode triboelectric nanogenerator (TENG) has been proposed for room temperature detection of NH3 concentrations. By integrating NH3-sensing materials into the nanogenerator (TENG), the degree of ambient NH3 concentration can be actively detected at room temperature. The output voltage of the self-powered system has a proportional relationship with NH3 concentrations. Furthermore, the Ce-ZnO heterostructure nanoparticles thin film was prepared by hydrothermal synthesis method under 150°C and then form a sensitive film through spray method, which demonstrates a good sensing-response when exposed to NH3 molecules. For comparison, the ZnO nanoparticles was prepared through the same method. Moreover, the morphology and chemical properties of the fabricated sensor based on ZnO nanoparticles and Ce-ZnO heterostructure nanoparticles film were characterized by SEM, UV-visible spectroscopy and XRD, respectively. In addition, the prepared self-powered triboelectric NH3 sensor based on Ce-ZnO heterostructure nanoparticles composite thin film holds a gas-sensing response of 44.68% at 100 ppm NH3. The doping of Ce in the hydrothermal synthesis process of ZnO nanoparticles effectively enhanced the active sites of ZnO, leading to an increase of the NH3-sensing response compared to pure ZnO nanoparticles film, which is 4.4 times higher than that of pure ZnO. This research not only provides a simple method in self-powered NH3 sensing but also successfully realizes the integration of NH3-sensitive materials in the TENG to achieve integrated compatibility in NH3 detection.

Paper Details

Date Published: 8 February 2019
PDF: 6 pages
Proc. SPIE 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging, 108431I (8 February 2019); doi: 10.1117/12.2506914
Show Author Affiliations
Si Wang, Univ. of Electronic Science and Technology of China (China)
Huiling Tai, Univ. of Electronic Science and Technology of China (China)
Guangzhong Xie, Univ. of Electronic Science and Technology of China (China)
Yuanjie Su, Univ. of Electronic Science and Technology of China (China)
Xiaosong Du, Univ. of Electronic Science and Technology of China (China)
Yadong Jiang, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 10843:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging
Yadong Jiang; Xiaoliang Ma; Xiong Li; Mingbo Pu; Xue Feng; Bernard Kippelen, Editor(s)

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