Space charge effect and the step voltages in metal/polyimide/rhodamine-dendorimer/polyimide/metal junctions
Space charge effect and the step voltages in metal/polyimide/rhodamine-dendorimer/polyimide/metal junctions
复制标题
金属/聚酰亚胺/罗丹明树枝状聚合物/聚酰亚胺/金属结中的空间电荷效应和阶跃电压
DOI：
10.1063/1.1380216
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发表时间：
2001
影响因子：
3.2
通讯作者：
M. Iwamoto
中科院分区：
文献类型：
--
作者：
Y. Noguchi;Y. Majima;M. Iwamoto
由于电子从金属向有机膜的位移，在有机膜/金属界面处形成纳米厚度的静电空间电荷层。这种空间电荷层直接影响人工分层的罗金刚烷-树枝状聚合物薄膜的电流-电压（I-V）特性，这些薄膜显示出类似于库仑楼梯的台阶结构。一个罗丹明dendorimer分子和金属电极之间的电容计算使用球-平面模型，假设多余的电子电荷从平面金属电极转移到膜中。发现该电容随着过量电荷的增加而增加，这导致如在金属/聚酰亚胺/罗丹明-树枝状聚合物/聚酰亚胺/金属结中观察到的I-V特性中的电压阶跃的变化。这种电压阶跃是从理论上推导出来的，并将解释Au/聚酰亚胺/罗丹明-树枝状聚合物/聚酰亚胺/Al和Al/聚酰亚胺/罗丹明-树枝状聚合物/聚酰亚胺/Al结之间的差异。
An electrostatic space charge layer of nanometer thickness is formed at organic film/metal interfaces due to the displacement of electrons from the metal to the film. This space charge layer directly affects the current–voltage (I–V) characteristics of artificially layered rhoadamine–dendorimer thin films, which show a step structure similar to a Coulomb staircase. The capacitance between one rhodamine–dendorimer molecule and a metal electrode is calculated using a sphere-plane model, assuming that excess electronic charges are displaced from the plane metal electrode into the film. This capacitance is found to increase as the excess charge increases which leads to a change in the voltage steps in the I–V characteristics as observed in metal/polyimide/ rhodamine–dendorimer/polyimide/metal junctions. Such a voltage step is derived theoretically, and will explain the difference between Au/polyimide/rhodamine–dendorimer/ polyimide/Al and Al/polyimide/rhodamine–dendorimer/polyimide/Al junctions.
电极上的 Langmuir-Blodgett 薄膜
DOI：
--
发表时间：
2007
期刊：
in Encyclopedia of Electrochemistry 10
影响因子：
--
作者：
M. Sakomura;M. Fujihira;Langmuir-Blodgett films on electrodes
通讯作者：
Langmuir-Blodgett films on electrodes