文献类型：期刊文献

英文题名：The effect of electroactive interlayer on the ferroelectric properties in poly(vinylidene fluoride-trifluoroethylene) copolymer ultrathin films

作者：Zhang, Xiuli[1,2];Hou, Ying[1];Zhang, Yuan[1];Lv, Zhaoyue[1];Xu, Guoqiang[3];Xu, Haisheng[1]

机构：[1]E China Univ Sci & Technol, Dept Phys, Shanghai 200237, Peoples R China;[2]Shanghai Univ Engn Sci, Sch Fundamental Studies, Shanghai 201620, Peoples R China;[3]Kunshan Hisense Elect Co Ltd, Kunshan 215300, Jiangsu, Peoples R China

年份：2012

卷号：112

期号：7

外文期刊名：JOURNAL OF APPLIED PHYSICS

收录：;EI(收录号：20124315595219);WOS:【SCI-EXPANDED(收录号:WOS:000310489400106)】；

基金：This work was supported in part by a grant from the National Natural Science Foundation of China (Contract No. 91123034), and Shanghai University of Engineering Science under Grant Nos. 11XK11 and 2011X34.

语种：英文

外文关键词：Ferroelectricity - Fluorine compounds - Ferroelectric films - Styrene - Plastic coatings - Polarization - Composite films

摘要：A series of ferroelectric polarization reversal measurements have been conducted on spin-coated ultrathin poly(vinylidene fluoride-trifluoroethylene) [P(VDF-TrFE)] copolymer films sandwiched with different electroactive materials between P(VDF-TrFE) and metal electrodes. Three types of electroactive interlayers, including highly polarizable material copper-phthalocyanine (CuPc), electron conductive polyethylene dioxythiophene/poly(styrene sulfonate acid), and ion (proton) conductive poly (vinyl phosphonic) acid, have been employed in our experiment. In addition, the ferroelectric film with CuPc exhibits larger remnant polarization and the enhancement of fatigue resistance although higher drive voltage and more switching time can be observed, which differs from the samples with electron and proton conductors as interlayers. The further analysis shows that this may be attributed to higher dielectric constant of CuPc than that of P(VDF-TrFE) layer. These results suggest that three types of interlayers can lead to a large improvement of ferroelectric switching, which is promising for potential applications. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.4757936]