{"title":"Analysis of non-ideal effects and electrochemical impedance spectroscopy of arrayed flexible NiO-based pH sensor","authors":"Siao-Jie Yan, J. Chou, Yi-Hung Liao, Chih-Hsien Lai, Jian-Syun Chen, Bo-Yang Zhuang, Hsiang-Yi Chen, Ting-Wei Tseng","doi":"10.1109/APCCAS.2016.7804086","DOIUrl":null,"url":null,"abstract":"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.","PeriodicalId":6495,"journal":{"name":"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","volume":"23 1","pages":"670-673"},"PeriodicalIF":0.0000,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2016 IEEE Asia Pacific Conference on Circuits and Systems (APCCAS)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/APCCAS.2016.7804086","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
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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