Abstract: As a new semiconductor material, perovskite (ABY3) has unique crystal structure, adjustable band gap, high carrier mobility and excellent chemical stability, thermal stability and catalytic performance. It shows great development potential in the fields of solar cells, photoelectric detection, industrial catalysis, gas sensing and so on. Based on the analysis of its crystal structure and sensing mechanism, this paper summarizes the research progress of perovskite in the field of gas sensing in recent years, systematically discusses various factors affecting the sensing response, and summarizes the strategies to improve the gas sensing properties of materials. Finally, the challenges of perovskite materials in the field of gas sensing are summarized, and their future development is prospected. Perovskite materials with high efficiency, stability, environmental protection and low energy consumption are the focus of future research, and self-powered sensing chip, multi signal coupling sensing and miniaturized intelligent integration will provide a broader development space for its application.
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