文献类型：期刊文献

英文题名：High-temperature ferroelectric behaviors of poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films with electroactive interlayers

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：6

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;EI(收录号：20121514942460);WOS:【SCI-EXPANDED(收录号:WOS:000302221700136)】；

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

语种：英文

外文关键词：Composite films - Ferroelectricity - Styrene - Fluorine compounds - Ferroelectric films - Conducting polymers

摘要：The high-temperature ferroelectric behaviors for poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)) copolymer ultrathin films with electroactive interlayers have been studied. The different electroactive polymers, commercial poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonic) acid (PEDOT-PSSH), in situ synthesized PEDOT-PSSH with high PEDOT ratio and poly(3,4-ethylene dioxythiophene)-poly(styrene sulfonic) ammonia (PEDOT-PSSNH4), are used as the interlayer between P(VDF-TrFE) and metal electrodes. It is found that the ferroelectric properties at high temperature are strongly dependent on the interlayer and the faster degradation occurs on the sample with the interlayer which has enough protons as compensating charges. Further analysis on the polarization response behaviors and capacitance shows that the high-temperature ferroelectric properties are more closely associated with the compensating charges in interlayer than the ferroelectric film itself, illustrating the importance of the appropriate interlayer materials. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3699051]