SHG investigation of ferroelectricity, domain orientations, and phases of monolithic PVDF thin films

摘要

Second harmonic generation (SHG) laser spectroscopy has been demonstrated to be a powerful, sensitive,and non-destructive analytical technique to study crystalline phases, domain structures, and molecular dipoleorientations of ferroelectric polymeric thin films such as PVDF. While other spectroscopic techniques, such asWXRD and FTIR, do provide valuable information on the crystalline phases, they are not sensitive enough toprovide the detailed information at molecular levels and properties at interfaces. The current study of single layeredPVDF polymer has also shown that SHG can be further developed into an in-situ, sensitive and quantitative tool tostudy ferroelectric polymeric thin film structures. In combination, SHG and electric field induced SHG (EFISH)techniques will allow us to interrogate multilayered structures layer-by-layer, the effects of physical confinementand interfacial physics.© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.