fig2

Figure 2. (A) XRD patterns of CPB/PVDF nanocomposite fiber films with CPB loadings from 0 to 6 wt.%. (B) Variation of crystal lattice parameters with CPB content. Diffraction data from standard PDF cards (CPB: #18-0364, PVDF: #42-1649) are depicted for indexing and comparison. (C) FTIR spectra of CPB/PVDF nanocomposite fiber films with increasing CPB loadings from 0 to 6 wt.%. (D) Variation of electroactive phase fraction with the content of CPB nanoparticles. CPB: CsPbBr₃; PVDF: poly(vinylidene fluoride); FTIR: Fourier transform infrared spectroscopy.