A novel low-temperature SnO_(2) gas sensor was prepared and studied on silicon nanostructures formed by femtosecond laser irradiation.By applying a bias voltage on the silicon substrate to alter the charge distributio...A novel low-temperature SnO_(2) gas sensor was prepared and studied on silicon nanostructures formed by femtosecond laser irradiation.By applying a bias voltage on the silicon substrate to alter the charge distribution on the surface of the SnO_(2),carbon monoxide(CO),and ammonia(NH_(3))gas can be distinguished by the same sensor at room temperature.The experimental results are explained with a mechanism that the sensor works at low temperature because of adsorption of gas molecules that trap electrons to the surface of the SnO_(2).展开更多
基金supported by the National Science Foundation under Grant No.[CMMI-1031111].
文摘A novel low-temperature SnO_(2) gas sensor was prepared and studied on silicon nanostructures formed by femtosecond laser irradiation.By applying a bias voltage on the silicon substrate to alter the charge distribution on the surface of the SnO_(2),carbon monoxide(CO),and ammonia(NH_(3))gas can be distinguished by the same sensor at room temperature.The experimental results are explained with a mechanism that the sensor works at low temperature because of adsorption of gas molecules that trap electrons to the surface of the SnO_(2).
