Current Instability for Silicon Nanowire Field-Effect Sensors Operating in Electrolyte with Platinum Gate Electrodes
Current Instability for Silicon Nanowire Field-Effect Sensors Operating in Electrolyte with Platinum Gate Electrodes
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DOI：
10.1149/1.3584082
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发表时间：
2011-01-01
影响因子：
--
通讯作者：
Zhang, Shi-Li
中科院分区：
文献类型：
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作者：
Chen, Si;Nyholm, Leif;Zhang, Shi-Li
电流不稳定性的硅纳米线场效应晶体管中观察到的电解质与铂栅电极。涉及Ag/AgCl参比栅电极的比较研究表明，该效应是由Pt电极/电解质界面处的电位漂移引起的。在pH 7.4的磷酸盐缓冲盐水中，发现Pt电极的电位的稳定需要大约1000秒。在电解质/氧化纳米线界面处发生的具有可比时间常数的并发电位漂移呈现复杂的器件电流响应，这使得结果的解释复杂化。(C)2011年电化学学会。[DOI：10.1149/1.3584082]保留所有权利。
Current instability is observed for silicon nanowire field-effect transistors operating in electrolytes with Pt gate electrodes. A comparative study involving an Ag/AgCl-reference gate electrode reveals that the effect results from a drift in the potential at the Pt-electrode/electrolyte interface. In a phosphate buffer saline of pH 7.4, the stabilization of the potential of the Pt electrode was found to require approximately 1000 s. A concurrent potential drift, with a comparable time constant, occurring at the electrolyte/oxidized-nanowire interface rendered a complex device current response which complicated the interpretation of the results. (C) 2011 The Electrochemical Society. [DOI: 10.1149/1.3584082] All rights reserved.