Fabrication of lead oxide nanoparticles by green synthesis method for photovoltaic applications

Abstract

PbO NPs have been prepared by green synthesis. The diffraction patterns of α-PbO-NPs are shown by the XRD pattern, and the β-PbO-NPs have proven the tetragonal and orthorhombic structure. PbO has an optical energy gap of 4.2 eV. The FT-IR observed bond at 676 cm-1 attributed to the existence of PbO stretch. Nanoparticals with spherical and semi-spherical shapes are formed, as seen in the SEM image. The average particle size was under 100 nm. Fabrication and characterization of a high performance Ag/PbO/PSi/p-Si/Ag heterojunction photodetector. The photodetector's responsivity was 0.7 A/W at 850 nm. The maximum detectivity and quantum efficiency spectra 1.009 ×1013 at 850 nm and 3×102 at 200nm which indicates that PbO NPs made using this technique have a good chance of being used to create porous silicon photodetectors with high performance heterojunctions.