An electro-chemical sensor includes a first electrode, a second electrode spaced apart from the first electrode, and a semiconductor channel in electrical contact with the first and second electrodes. The semiconductor channel includes a trapping material. The trapping material reduces an ability of the semiconductor channel to conduct a current of charge carriers by trapping at least some of the charge carriers to localized regions within the semiconductor channel. The semiconductor channel includes at least a portion configured to be exposed to an analyte to be detected, and the trapping material, when exposed to the analyte, interacts with the analyte so as to at least partially restore the ability of the semiconductor channel to conduct the current of charge carriers.
一种电
化学传感器包括第一电极、与第一电极间隔的第二电极和与第一和第二电极电接触的半导体通道。半导体通道包括一个捕获材料,该捕获材料通过将至少一些电荷载体捕获到半导体通道内的局部区域来降低半导体通道导电载流子的能力。半导体通道包括至少一部分被配置为暴露于待检测的分析物,并且当暴露于分析物时,捕获材料与分析物相互作用,以至少部分恢复半导体通道导电载流子的能力。