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| P(VDF-TrFE)/Ag复合薄膜的铁电以及介电性能研究 | |
| 引用本文： | 阮亚飞,江林,王建禄,孙璟兰,刘爱云,孟祥建.P(VDF-TrFE)/Ag复合薄膜的铁电以及介电性能研究[J].红外与毫米波学报,2013,32(1):18-22. |
| 作者姓名： | 阮亚飞 江林 王建禄 孙璟兰 刘爱云 孟祥建 |
| 作者单位： | 1. 中科院上海技术物理研究所红外物理国家重点实验室,上海200083;上海师范大学,上海200233 2. 中科院上海技术物理研究所红外物理国家重点实验室,上海,200083 3. 上海师范大学,上海,200233 |
| 基金项目： | 国家自然科学基金资助项目(11074264, 60977070和 61007055), 上海市教委资助项目(12ZZ133) |
| 摘 要： | 利用旋涂法制备并采用氢气退火处理得到P(VDF-TrFE)/Ag复合薄膜,在XRD图像上可以观察到在2θ=38.1°的Ag(111)相的衍射峰,同样在SEM图像上观察到银纳米粒子的存在.在薄膜的红外透射光谱上可以观察到β相特征峰的蓝移,这可归结为银纳米粒子与偶极子的相互作用.银纳米粒子的掺杂增强了薄膜的铁电和介电性能.与传统退火方式处理的纯P(VDF-TrFE)薄膜相比,纳米银掺杂比例为10％的P(VDF-TrFE)/Ag复合薄膜的铁电剩余极化强度和介电常数分别提高了32.5％和13.3％.介电损耗不随纳米银掺杂比例的增加而变化的现象不符合渗流理论. |
| 关 键 词： | 聚偏二氟乙烯 氢气退火 银纳米粒子 铁电性 渗流理论 |
| 收稿时间： | 2012/11/13 |
| 修稿时间： | 3/9/2012 12:00:00 AM |
The ferroelectric and dielectric properties of poly (vinylidenefluoride-trifluoroethylene) copolymer /Ag composite films |
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| RUAN Ya-Fei,JIANG Lin,WANG Jian-Lu,SUN Jing-Lan,LIU Ai-Yun and MENG Xiang-Jian.The ferroelectric and dielectric properties of poly (vinylidenefluoride-trifluoroethylene) copolymer /Ag composite films[J].Journal of Infrared and Millimeter Waves,2013,32(1):18-22. | |
| Authors: | RUAN Ya-Fei JIANG Lin WANG Jian-Lu SUN Jing-Lan LIU Ai-Yun and MENG Xiang-Jian |
| Affiliation: | 1(1.National Laboratory for Infrared Physics,Shanghai Institute of Technical Physics, Chinese Academy of Science,Shanghai 200083,China; 2.Key Laboratory for Optoelectronic Materials and Devices,Shanghai Normal University,Shanghai 200233,China) |
| Abstract: | The poly(vinylidenefluoride-trifluoroethylene)/Ag composite films are derived by spin-coating and annealed at hydrogen atmosphere. Ag(111) phase labeled at the diffraction peak 2θ=38.1 is observed from X-ray diffraction (XRD) pattern, and it was also proved from scanning electron microscope (SEM) images. A blue shift was observed in the infrared transmission spectrum of the composite films, which suggests the interaction of dipole and silver nanoparticles. The ferroelectric polarization and dielectric constant of P(VDF-TrFE)/Ag composite thin films increase by 32.5% and 13.3%, respectively, compared with the pure polymer films under air annealing. The dielectric loss tangent of the P(VDF-TrFE)/Ag composite films is independent of Ag doping ratios, which violates the percolation theory. |
| Keywords: | PVDF hydrogen annealing Ag nanoparticle ferroelectric percolation theory |
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