Electrical and Thermoelectrical Behavior of Binary Composites of Phosphate Glass Loaded with Zinc Fillers: Promising Materials for Photovoltaic's

Homogeneous xPbO-(1-x)P2O5 glasses where 0% <= x < 100% have been successfully synthesized using a melt-quenching method. The short range structures of the prepared samples were examined by Fourier transform infrared spectroscopy, x-powder diffraction and scanning electron microscopy. The most stable vitreous phase is of composition 45mol%PbO-55mol%P2O5; it was loaded with zinc volume fraction. We carried out experimental and simulative investigations of the electrical characteristics of p-n junction; the obtained results indicated that conductivity of the composites increases by increasing dopent concentration. It was also observed that the current voltage characteristics of the composite were found to be ohmic in nature, wherein drastic drop of the electrical conduction was observed at an accurate temperature of 405 K. Electrical behavior of the composites as function of filler concentration and versus temperature were explained respectively by percolation theory and positive temperature coefficient effect.