arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0704.2322cond-mat.mtrl-sci
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金属/绝缘体/金属系统中单极载流子注入的自洽理论

Self consistent theory of unipolar charge-carrier injection in metal/insulator/metal systems

F. Neumann, Y. A. Genenko, C. Melzer, H. von Seggern

摘要:

提出了一种描述金属/绝缘体/金属系统电流-电压特性的一致性器件模型。在这个模型中,绝缘体和金属电极被描述在同一理论框架内,通过使用态密度分布。这种方法导致微分方程的电场,必须解决在一个自洽的方式,通过考虑连续性的电位移和电化学电位在完整的系统。该模型能够描述的金属/绝缘体/金属系统在正向和反向偏置的金属/绝缘体注入势垒的任意值的电流-电压特性。在高注入势垒的情况下,提供了近似值,提供了与实验进行比较的工具。使用有机半导体的简化模型示例性地进行数值计算。

英文摘要:

A consistent device model to describe current-voltage characteristics of metal/insulator/metal systems is developed. In this model the insulator and the metal electrodes are described within the same theoretical framework by using density of states distributions. This approach leads to differential equations for the electric field which have to be solved in a self consistent manner by considering the continuity of the electric displacement and the electrochemical potential in the complete system. The model is capable of describing the current-voltage characteristics of the metal/insulator/metal system in forward and reverse bias for arbitrary values of the metal/ insulator injection barriers. In the case of high injection barriers, approximations are provided offering a tool for comparison with experiments. Numerical calculations are performed exemplary using a simplified model of an organic semiconductor.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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