利用静电自组装方法在石英玻璃表面交替沉积聚二烯丙基二甲基氯化铵(PDDA)和聚偏氟乙烯(PVDF)超薄膜,制得PDDA/PVDF铁电复合超薄膜.通过石英晶体微天平实时监测超薄膜的沉积,研究了超薄膜的表面形貌、结构及电性能.结果表明,自组装每层PVDF超薄膜的厚度为7.5 nm;PDDA/PVDF铁电复合超薄膜的表面平整、均匀,其中C1s的光电子能谱与极化处理后充负电荷的PVDF铁电聚合物一致,但F1s由于溶解再组装过程而降低了0.3 eV;静电自组装材料纳米级的薄膜厚度和聚合物的络合作用导致了铁电复合超薄膜的非晶结构和高的表面电阻率. The PDDA and PVDF ultrathin films were alternately deposited on the surface of quartz glass by electrostatic self-assembly method to prepare PDDA / PVDF ferroelectric composite ultrathin films. Through the quartz crystal The results showed that the thickness of self-assembled PVDF ultrathin films was 7.5 nm, and the surface of PDDA / PVDF ferroelectric composite ultrathin films was smooth , And the photoelectron spectrum of C1s is consistent with the polarization-treated negatively charged PVDF ferroelectric polymer, but F1s is reduced by 0.3 eV due to the dissolution and reassembly process. The nanoscale thickness of the film and the polymer The complexation results in the amorphous structure and the high surface resistivity of the ferroelectric composite thin film.