Synthesis and characterization of silver tungstate/iron phthalocyanine nanocomposite for electronic applications

摘要

Silver tungstate/iron phthalocyanine nanocomposite (Ag2WO4/FePc) was prepared by simple solvent evaporation method. Thermodynamic stability of the synthesized nanocomposite was studied by thermogravimetric analysis. The nanocomposite was structurally characterized by X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy. The results confirm the formation of Ag2WO4/FePc nanocomposite. The size and morphology of the prepared nanocomposite were analyzed by scanning electron microscopy and high-resolution transmission electron microscopy. The optical properties were analyzed by ultraviolet-visible and photoluminescence spectroscopic techniques. UV-visible absorption studies indicate that Ag2WO4/FePc nanocomposite has extended visible absorption in the wavelength range 662 to 782 nm. The nanocomposite shows high emission intensity and greenish-blue emission when excited with near-ultraviolet light. The resistivity of the sample was measured at different temperatures. The dielectric constant, dielectric loss and AC conductivity values were measured in the frequency range 100 Hz-20 MHz. The results obtained from thermal, structural, optical and electrical characterization suggests that the synthesized Ag2WO4/FePc nanocomposite can be used as a potential material for varied optoelectronic and solid state applications. The present study constitutes the first report for the synthesis and characterization of Ag2WO4/FePc nanocomposite.