界面极化层引起P(VDF-TrFE)电容器的电容-电压的不对称（英文）

Asymmetric capacitance-voltage curves induced by pinned interface dipoles in poly( vinylidene fluoride / trifluoroethylene) capacitor

通过研究Au/P(VDF-TrFE)/Al电容器的变温(200 K到310 K)电容-电压曲线,室温下观察到两个极化方向下的电容不对称,这个现象可以应用于非挥发性存储器.电容不对称程度随着温度的降低而变小,当温度低于230 K,电容不对称现象消失.P(VDF-TrFE)与Al电极之间的界面极化层可以解释观察到的电容不对称现象.

The capacitance-voltage（ C-V） curves of Au / P（ VDF-TrFE） / Al capacitor were investigated from 200 K to 310 K. An asymmetry of capacitance value at 0 bias voltage under two polarization orientations was observed at room temperature region,which can be applied in the field of non-volatile memory. The capacitance asymmetry decays with reduced temperature and disappears as the temperature is below230 K. The phenomena is attributed to a pinned dipole layer between P（ VDF-TrFE） films and Al metal electrode.