Investigation of metrological parameters of sensors based on the pH-sensitive field effect transistors

Abstract

Primary semiconductor electrodes based on the dual channel pH-sensitive field effect transistors were investigated to characterize their performance both to determine pH value of test solution and to measure sensor responses in differential mode. The simplified three-lead sensor design has been implemented for these purposes. It is shown that such parameters as accuracy, repeatability and stability of developed sensors satisfy necessary requirements for typical laboratory applications.