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dmdmdm

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[交流] 【求助】测试Mott-Schottkky曲线的意义

请教各位:
       本人在看文献中发现作者测定了不锈钢的Mott-Schottkky曲线,通过斜率之类的数值确定了电化学体系的参数。
       但小弟实在不知测试Mott-Schottkky曲线的原理和意义。
       请高手不吝赐教!
       谢谢!
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wentaoyao

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dmdmdm(金币+1):谢谢参与
引用回帖:
Originally posted by dmdmdm at 2010-12-22 10:51:16:
请教各位:
       本人在看文献中发现作者测定了不锈钢的Mott-Schottkky曲线,通过斜率之类的数值确定了电化学体系的参数。
       但小弟实在不知测试Mott-Schottkky曲线的原理和意义。
       请高手不吝赐 ...

Staircase Potentio Electrochemical Impedance Spectroscopy(Mott-Schottky),is designed to perform successive impedance measurements during a potential sweep. The main application of this technique is to study electrochemical reaction kinetics along voltamperometric curves in analytical electrochemistry. Thus this technique finds all its interest to study the complexity of non-stationary interfaces with faradic processes where the total AC response is required.
Another common application of such a technique is semi-conductor materials study. For these stationary systems,only two or three frequencies for each potential step are required to determine the donor density and the flat band potential. The SPEIS technique consists in a staircase potential sweep. An impedance measurement is performed on each potential step. For all these applications a Mott-Schottky plot (1/C2 vs. Ewe)can be displayed and a special linear fit is applied to extract the semi-conductor parameters.
2楼2010-12-22 15:34:11
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秀才遇着兵

金虫 (小有名气)


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dmdmdm(金币+1):谢谢参与
我也在做这个,一堆数据不知道代表什么意思
3楼2010-12-27 15:49:52
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38161987

木虫 (正式写手)


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dmdmdm(金币+1):谢谢参与
ms曲线的话很好弄得啊~~

你做不锈钢的话一般钝化膜应该是双极性的

也就是说ms曲线应该由两部分的,一部分是p型的一部分是n型的~~~

具体代表的参数如果lz还需要的话我给详细给你解释~~

但是我给lz发了短消息,也希望lz能再阻抗方面帮帮我呢~~~
4楼2011-12-14 15:47:45
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小张64245

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dmdmdm(金币+1): 谢谢参与
小毛球: 屏蔽内容, 化学版禁止留下邮箱、QQ等个人信息,有需求请私信 2018-12-25 13:46:52
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5楼2018-12-25 13:34:03
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