[21p-P18-1~40] 12.3 Functional Materials and Novel Devices

▲ [21p-P18-13] Protonic Field-Effect Transistors (H⁺-FETs) Measurement of Weak-acid Polymer Thin Film Through Electrochemical Impedance Spectroscopy (EIS)

〇(P)Athchaya Suwansoontorn¹, Rahul Bhardwaj¹, Daisuke Hirose¹, Yuzuru Takamura¹, Yuki Nagao¹ (1.JAIST)

Keywords:EIS, Protonic FET, Proton conductive polymer

This work combines the Au electrode H⁺-FET with EIS measurement to examine the actual proton conduction behavior of the whole material regions without the influence of electrode reaction. Different from the reported H⁺-FET measurement, which includes the Pd electrode reaction that injects the excess proton and a DC measurement that can observe only the interface region. However, many parameters affect the modulation of the proton charge carrier by the external gate voltage, which will be discussed in detail.