文献类型：期刊文献

英文题名：Modeling of ferroelectric switching process in poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films with electroactive interlayer

作者：Hou, Ying[1];Zhang, Xiuli[1];Zhang, Yuan[1];Xu, Guoqiang[2];Xu, Haisheng[1]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Kunshan Hisense Elect Co Ltd, Kunshan 215300, Jiangsu, Peoples R China

年份：2012

卷号：111

期号：2

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;EI(收录号：20131816299131);WOS:【SCI-EXPANDED(收录号:WOS:000299792400089)】；

基金：This work was supported by the National Natural Science Foundation of China (Contract No. 91123034).

语种：英文

外文关键词：Ferroelectricity - Polarization - Styrene - Polymer films - Ferroelectric films - Interfaces (materials) - Conducting polymers - Semiconducting films - Switching - Fluorine compounds - Piezoelectricity

摘要：A universal model and experiments on the polarization switching for ferroelectric poly(vinylidene fluoride-trifluoroethylene) copolymer ultra-thin films with an interface layer have been studied. It is found that polarization switching could complete if the capacitance of the interface layer is large enough compared with that of the ferroelectric film. Based on this model, a conducting polymer, poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonic) acid, is introduced as an interface layer between metal electrodes and ferroelectric polymer film and the switching property measurements well agree with the simulation results of the model. These findings provide an effective route to enhance the polarization switching for the ferroelectric films, which is promising for potential applications. (C) 2012 American Institute of Physics. [doi: 10.1063/1.3677946]