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8th GOSPEL Workshop. Gas sensors based on semiconducting metal oxides: basic understanding & application fields

20–21 Jun 2019
Ferrara, Italy
Europe/Rome timezone

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Session

Session 6 - Fundamental understanding - High sensitivity

Chair: Nikolay Samotaev
21 Jun 2019, 11:30
Ferrara, Italy

Ferrara, Italy

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  1. 3. Ultra-high sensitive (ppt) gas sensor based on the pulse heating using MEMS technique
    Dr Suematsu Koichi (Kyushu University, Faculty of Engineering Sciences)
    21/06/2019, 11:30
    Invited Talk
  2. 18. Nanocrystalline LaCoO<sub>3</sub> modified by Ag nanoparticles with improved sensitivity to H<sub>2</sub>S
    Artem Marikutsa (Moscow State University)
    21/06/2019, 12:00
    Oral

    As a semiconductor metal oxide with perovskite structure, LaCoO3 is of interest for chemical sensors. The hole-type conduction occurs via Co-O framework. The surface of LaCoO3 nanostructures exhibits different adsorption sites (La3+ and Co3+) and active sites (chemisorbed oxygen, lattice anions) for gas molecules reception. The sensing mechanisms...

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  3. 37. Realizing the Control of Fermi Level and Gas-Sensing Selectivity over Gallium-Doped In2O3 Inverse Opal Microspheres
    Mr Tianshuang Wang
    21/06/2019, 12:20
    Oral

    Herein, formaldehyde sensors based on gallium-doped In2O3 inverse opal (IO-(GaxIn1-x)2O3) microspheres were purposefully prepared by simple ultrasonic spray pyrolysis method combined with self-assembly sulfonated polystyrene spheres template. The well-aligned inverse opal structure, with three different-sized pores, plays dual roles of accelerating the diffusion of gas molecules and providing...

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  4. 84. Sub-ppm NO2 sensing in temperature cycled mode with Ga doped ZnO thin films deposited by RF sputtering
    Dr Lionel Presmanes (CIRIMAT, Université de Toulouse)
    21/06/2019, 12:35
    Oral

    In this work Ga doped ZnO thin films have been deposited by RF magnetron sputtering onto a silicon micro-hotplate and their structural, microstructural and gas sensing properties have been studied. ZnO:Ga thin film with a thickness of 90 nm has been deposited onto a silicon based micro-hotplates without any photolithography process thanks to a low cost and reliable stencil mask process....

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