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Open AccessReview

The Morphologies of the Semiconductor Oxides and Their Gas-Sensing Properties

by Tingting Lin 1,2, Xin Lv 1,2, Shuang Li 1,2 and Qingji Wang 1,2,*
1
College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
2
Key Laboratory of Geophysics Exploration Equipment, Ministry of Education of China, Changchun 130061, China
*
Author to whom correspondence should be addressed.
Sensors 2017, 17(12), 2779; https://doi.org/10.3390/s17122779
Received: 19 October 2017 / Revised: 19 November 2017 / Accepted: 28 November 2017 / Published: 30 November 2017
(This article belongs to the Special Issue Gas Sensors based on Semiconducting Metal Oxides)
Semiconductor oxide chemoresistive gas sensors are widely used for detecting deleterious gases due to low cost, simple preparation, rapid response and high sensitivity. The performance of gas sensor is greatly affected by the morphology of the semiconductor oxide. There are many semiconductor oxide morphologies, including zero-dimensional, one-dimensional, two-dimensional and three-dimensional ones. The semiconductor oxides with different morphologies significantly enhance the gas-sensing performance. Among the various morphologies, hollow nanostructures and core-shell nanostructures are always the focus of research in the field of gas sensors due to their distinctive structural characteristics and superior performance. Herein the morphologies of semiconductor oxides and their gas-sensing properties are reviewed. This review also proposes a potential strategy for the enhancement of gas-sensing performance in the future. View Full-Text
Keywords: morphology; nanostructure; semiconductor; oxide; gas sensor morphology; nanostructure; semiconductor; oxide; gas sensor
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Lin, T.; Lv, X.; Li, S.; Wang, Q. The Morphologies of the Semiconductor Oxides and Their Gas-Sensing Properties. Sensors 2017, 17, 2779.

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