Author/Authors :
Shurong Wang، نويسنده , , Yingqiang Zhao، نويسنده , , Jing Huang، نويسنده , , Yan Wang، نويسنده , , Hongxia Ren، نويسنده , ,
Shihua Wu *، نويسنده , , Shoumin Zhang، نويسنده , , Weiping Huang، نويسنده ,
Abstract :
A study on the low-temperature CO gas sensors based on Au/SnO2 thick film was reported. Au/SnO2 powders were prepared by a deposition–
precipitation method. Thick films were fabricated from Au/SnO2 powders. X-ray diffraction (XRD), high-resolution transmission electron
microscopy (HRTEM) and X–ray photoelectron spectroscopy (XPS) analyses were carried out for investigation of morphology and crystalline
structure. Au/SnO2 thick film sensors exhibited high sensitivity to CO gas at relatively low operating temperature (83–210 8C). We also reported
the effect of the calcination temperature of Au/SnO2 on the CO gas sensing behavior. The optimal calcination temperature of Au/SnO2 was 300 8C.
Keywords :
Calcination temperature , Deposition–precipitation method , Au/SnO2 thick film , Low-temperature CO gas sensors
