fig6

Figure 6. Effects of γ-irradiation on the structure and electrical responses of the P(VDF-TrFE-CFE)/PMMA (50/50 wt.%) film. (A) XRD patterns of the films irradiated at different doses (10, 50, 100, and 150 kGy); (B) FTIR spectra with a zoom-in view of the carbonyl region, showing more pronounced carbonyl-related spectral changes with increasing dose; (C) frequency-dependent dielectric constant of the irradiated films; (D) energy density and efficiency of the irradiated films measured under different electric fields. XRD: X-ray diffraction; FTIR: fourier transform infrared; P(VDF-TrFE-CFE): poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene); PMMA: poly(methyl methacrylate); CFE: abbreviation of P(VDF-TrFE-CFE).