| Title |
Effect of Nickel Nitrate Doping on β-type PVDF Layers Prepared by Electrostatic Spray Deposition |
| Authors |
황규석(Kyu-Seog Hwang) ; 김명윤(Myung-Yoon Kim) ; 손병래(Byeongrae Son) ; 황보승(Seung Hwang-Bo) ; 노형갑(Hyeonggap No) |
| DOI |
http://doi.org/10.5370/KIEE.2018.67.10.1317 |
| Keywords |
PVDF ; Electrostatic spray deposition ; Ferroelectricity |
| Abstract |
PVDF as a semicrystal polymer, having a structure with C-F dipole moments, has been widely investigated because of its excellent chemical stability, mechanical strength, and ferroelectricity. In this study, ferroelectic β type?PVDF layer was prepared by using an electrostatic spray deposition method and the effects of the addition of Ni-nitrate in precursor solution on the properties of PVDF layer were evaluated. Crystallinity and chemical structure of the PVDF layer were analyzed by a X-ray diffraction and Fourier Transform Infrared Spectrophotometer. Surface structure and fractured cross section of the layer were examined by a field emission-scanning electron microscope. LCR meter was used to obtain the dielectric properties of the layer. As the addition of an inorganic metal salt in PVDF sol, β type?PVDF crystals were appeared in the hydrated metal salts doped-layer since the strong hydrogen bondings (O-H…F-C)n due to high polarity of OH- were formed. |