A nanostructured thick film gas sensor, based on semiconducting oxides, is an excellent candidate for a large-scale distribution of environmental detection points. Semiconducting oxide-based thick film gas sensors exhibit adequate properties for atm. environmental monitoring provided the phys. and microstructural properties of the materials are properly correlated to the required elec. features. To demonstrate the possibility of using semiconducting thick film gas sensors for atm. environmental monitoring, sensors were tested in the lab. and field. They were placed in an array inserted in a self-consistent unit and exposed to an actual atm. next to a conventional environmental monitoring station near a cross light in Ferrara, Italy. The conventional monitoring station is controlled by ARPA (Regional Agency for Environmental Prevention), Ferrara Section. The elec. response of the thick films based on TiO2 and Nb-doped TiO2 was compared to atm. CO concns. measured by the anal. equipments with methods approved by international stds.
Physics and technology of thick film sensors and their applications for environmental gas monitoring
MARTINELLI, Giuliano;CAROTTA, Maria Cristina;MALAGU', Cesare
2000
Abstract
A nanostructured thick film gas sensor, based on semiconducting oxides, is an excellent candidate for a large-scale distribution of environmental detection points. Semiconducting oxide-based thick film gas sensors exhibit adequate properties for atm. environmental monitoring provided the phys. and microstructural properties of the materials are properly correlated to the required elec. features. To demonstrate the possibility of using semiconducting thick film gas sensors for atm. environmental monitoring, sensors were tested in the lab. and field. They were placed in an array inserted in a self-consistent unit and exposed to an actual atm. next to a conventional environmental monitoring station near a cross light in Ferrara, Italy. The conventional monitoring station is controlled by ARPA (Regional Agency for Environmental Prevention), Ferrara Section. The elec. response of the thick films based on TiO2 and Nb-doped TiO2 was compared to atm. CO concns. measured by the anal. equipments with methods approved by international stds.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
