Semiconducting Metal Oxides: Morphology and Sensing Performance

  • Yonghui DengEmail author


The morphology and crystallographic structure of sensing materials can change the gas-sensing characteristics of metal oxide sensors. This chapter discusses the parameters that influence the gas sensors’ performance such as film thickness, grain size, agglomeration, porosity, faceting, grain network, surface geometry, and film texture on the main analytical characteristics (e.g., absolute magnitude and selectivity of sensor response, response–recovery time, and temporal stability). For example, the decrease of thickness, grain size and degree of texture helps to decrease time constants of metal oxide sensors. However, it is impossible to give a universal decision for simultaneous optimization all gas-sensing characteristics. In addition, synthesis methods of metal oxides sensing materials are also summarized in this chapter including sol–gel synthesis, hydro- and solvothermal reaction, self-assembly method and chemical vapor deposition (CVD) method.


Metal oxides gas sensors Synthesizing approaches Grain size Mesoporous structure Gas sensing performance 


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© Springer Nature Singapore Pte Ltd. 2019

Authors and Affiliations

  1. 1.Department of ChemistryFudan UniversityShanghaiChina

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