阵列柔性镍基pH传感器的非理想效应及电化学阻抗谱分析

2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS) Pub Date : 2016-10-01 DOI:10.1109/APCCAS.2016.7804086

Siao-Jie Yan, J. Chou, Yi-Hung Liao, Chih-Hsien Lai, Jian-Syun Chen, Bo-Yang Zhuang, Hsiang-Yi Chen, Ting-Wei Tseng

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引用次数: 0

摘要

本研究以氧化镍(NiO)为传感膜制备了阵列柔性NiO基pH传感器，该传感器通过电位测量系统可达到63.376 mV/pH的高灵敏度。研究了传感器的非理想效应，如漂移效应和滞后效应。pH 7的漂移速率为3.436 mV/hr, pH 7→pH 3→pH 7→pH 11→pH 7和pH 7→pH 11→pH 7→pH 3→pH 7回路的滞后电压分别为4.496 mV和1.817 mV。利用电化学阻抗谱对传感机理进行了表征。

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Analysis of non-ideal effects and electrochemical impedance spectroscopy of arrayed flexible NiO-based pH sensor

In this study, nickel oxide (NiO) was used as sensing film of arrayed flexible NiO-based pH sensor, which could reach high sensitivity (63.376 mV/pH) by potentiometric measurement system. Non-ideal effects of the sensor, such as drift and hysteresis effects, were investigated. Drift rate in pH 7 was 3.436 mV/hr, and hysteresis voltages in loops of pH 7 → pH 3 → pH 7 → pH 11 → pH 7 and pH 7 → pH 11 → pH 7 → pH 3 → pH 7 were respectively 4.496 mV and 1.817 mV. Moreover, sensing mechanism was characterized by electrochemical impedance spectroscopy.

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2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)

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