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

Session

Session 6 - Fundamental understanding - High sensitivity

Chair: Nikolay Samotaev

21 Jun 2019, 11:30

Ferrara, Italy

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

18. Nanocrystalline LaCoO₃ modified by Ag nanoparticles with improved sensitivity to H₂S

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...

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...

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....