In Situ Growth of PbS Nanoparticles without Organic Linker on ZnO Nanostructures via Successive Ionic Layer Adsorption and Reaction (SILAR)

The process of effective solar energy harvesting and conversion requires efficient photon absorption, followed by charge generation separation, then electron transfer. Nanostructured materials have been considered as potential building blocks for the development future generations cells. Much attention has given to wide-bandgap semiconductor nanowires, combined sensitized with low-bandgap semiconductors effectively attached nanowires low-cost highly Here, in situ growth lead sulfide (PbS) nanoparticles on surface zinc oxide (ZnO) grown Successive Ionic Layer Adsorption Reaction (SILAR) technique is presented different numbers cycles. morphology structure PbS are confirmed Scanning Electron Microscopy (SEM), revealing decoration nanoparticles, Transmission (TEM) HR-TEM, showing tight attachment ZnO nanowires. Selected Area Diffraction (SAED) confirms crystallization PbS. Photoluminescence spectra show a broad more intense deep-level emission band.