Journal of Graduate Studies - VOL - 38-1

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    Impedance spectroscopy and current-voltage characterization studies of theBa2Zn1-xNixWO6 double perovskite series
    (Graduate College - Alneelain university, 2017-12) Yousef A. Alsabah, Abdelrahman A. Elbadawi; Eltayeb M. Mustafa, Mohamad S. AlSalhi
    A cubic (Fm-3m) crystal structure Ba2Zn1-xNixWO6 double perovskite series were synthesized by solid state reaction method at high temperature (≤1200oC for 24h). The impedance spectroscopy results show that the semicircle shape decreased with substitution increasing of the Ni+ 2 ions with Zn+ 2ions that refer to the decreasing in the grain resistance with increasing substitution that means the semiconducting behavior increasing for the Ba2Zn1-xNixWO6 series, also the resistivity and permittivity of the sample that decreased with frequency increasing and vice versa that the electrical conductivity found to increase with frequency increasing. The efficiency of the solar panel was measured via the current-voltage (I-V) characteristic curve, and the results were showed. The efficiency of the Five samples was found to be η = 0.594, 0.435, 0.43, 0.478 and 0.435% for Ba2ZnWO6, Ba2Zn0.75 Ni0.25WO6 , Ba2Zn0.50Ni0.50WO6 , Ba2Zn0.25Ni0.75WO6 and Ba2NiWO6 respectively.