A possible mechanism for the negative capacitance observed in organic devices
A possible mechanism for the negative capacitance observed in organic devices
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发表时间：
2012-10
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通讯作者：
X. Wang;C. Cai
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文献类型：
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作者：
X. Wang;C. Cai
研究了有机器件中由足够的电场引起的负电容，例如电感的机理。有机体中的阳离子在外加电压的驱动下，在界面处聚集，进而产生表面态或介质态。这些状态导致通过器件的较大结电流，表示在三种情况下模拟的负电容：阻抗谱，电容测量和电流响应。这个简单的动力学模型可能有助于理解为什么在各种有机器件中观察到负电容现象。
The mechanism of negative capacitance, e.g. inductance, induced by a sufficient electrical field in the organic device is investigated. The cations in organic bulk are proposed to be driven by the applied voltage and to accumulate at the interface, and further to generate the surface states or media states. These states result in a larger junction current through the device, indicating the negative capacitances which are simulated in three situations: impedance spectrum, capacitance measurement and current response. This simple kinetic model may be helpful to understand why the negative capacitance phenomenon is observed in various organic devices.