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Infrared Degenerate Four-wave Mixing with Upconversion Detection for Quantitative Gas Sensing
Published on: March 22, 2019
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Visible-Photoactive Perovskite Ferroelectric-Driven Self-Powered Gas Detection
Shiguo Han1,2,3, Lina Li1,2,4, Chengmin Ji1,2,4
1State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, Fujian, P. R. China.
Journal of the American Chemical Society
|June 1, 2023
Summary
Researchers developed a novel photoferroelectric material for self-powered gas sensing. This material enables highly sensitive and rapid detection of nitrogen dioxide (NO2) without external power.
Area of Science:
- Materials Science
- Chemical Sensing
- Solid-State Physics
Background:
- Chemiresistive gas sensing typically requires external power, limiting portable applications.
- Photoferroelectric materials offer potential for self-powered sensing due to their bulk photovoltage.
- Developing efficient and selective self-powered gas sensors is a key technological goal.
Purpose of the Study:
- To introduce a new photoferroelectric material for self-powered gas detection.
- To investigate its sensing performance for nitrogen dioxide (NO2) at room temperature.
- To demonstrate the feasibility of ferroelectricity-driven self-powered gas sensing.
Main Methods:
- Synthesis and characterization of a novel photoferroelectric material: [n-pentylaminium]2[ethylammonium]2Pb3I10.
- Evaluation of its self-powered sensing response to NO2 under visible light.
- Utilizing theoretical calculations and in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) for selectivity confirmation.
Main Results:
- The material exhibits large spontaneous polarization (∼4.8 μC/cm2) and visible-photoactive properties.
- Achieved excellent self-powered NO2 sensing with fast response/recovery (0.15/0.16 min) and high sensitivity (0.03 ppm-1).
- Demonstrated superior performance compared to traditional inorganic sensors requiring external power.
Conclusions:
- This work presents the first ferroelectricity-driven self-powered gas detection system.
- The developed material offers a promising platform for advanced self-powered sensing applications.
- Highlights the potential of photoferroelectrics in broadening self-powered sensing technologies.
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