(جامعة النيلين - كلية الدراسات العليا, 2017-01-15) Yousef A. Alsabah; Abdelrahman A. Elbadawi; Mohamad S. Alsalhi; Eltayeb M. Mustafa
Using solid state reactoin method, Tungsten double perovskite oxides
Ba;NiWO6 have been prepaired. The X-ray ditfration XRD, Scanning
electronic microscopy SEM, Ultravielot. Visible diffiise reflection,
Photoluminescence spectra and Electrical impedance spectroscopy
were used to charactrize the structure and optical properites of the
synthesized material. From X-ray powder diffration examination, the
sample shows a cubic structure with (Fm-3m) space group, and the
lattice parameter was investgated using Retvield method that found to
be 8.10875 Angestrom. The band gap energy of Ba;NiWO6 estimated
to be 3.20 eV from the diffuse reflection SpeCl;I'Llm. At room
temperature the excitation and emission photolumenescence and EIS
have been investgated.
Keuords: double perovskite, XRD, SEM, UV-visible ditfuse
reflectance, Raman, EIS, luminescence PL.
