A theoretical investigation of the power-law response of metal oxide semiconductor gas sensors I: Schottky barrier control

作者：Hua, Zhongqiu^*; Li, Yan; Zeng, Yan; Wu, Yi

来源：Sensors and Actuators B: Chemical , 2018, 255: 1911-1919.

DOI：10.1016/j.snb.2017.08.206

• Power-law response
• Transducer and receptor functions
• Gas sensor

This study presents a theoretical investigation of the power-law response of metal oxide semiconductor gas sensors which is characterized by a linear dependence of the sensor resistance on gas pressure or concentration in double-logarithmic plots. The connection of sensor resistance with the gas partial pressure is realized by a set of differential equations, which describe the receptor and transducer functions of metal oxide semiconductor sensors. Then, the power-law response based on the two functions has been derived to oxygen, reducing and oxidizing gases, respectively. The basic mechanism of the power-law response has been theoretically explained and found to be well consistent with our experimental results and with literature reports.

• 出版日期2018-2
• 单位河北工业大学