Vacuum-Evaporated ZnO Photoanode, Applied in Quantum Dot-Sensitized Solar Cells (CdS-CdSe)

摘要

In this research, the application of vacuum-evaporated nanostructured ZnOthin films as a photoanode and its use in quantum dot-sensitized solar cells(QDSSCs) is reported. Quantum dots (CdS/CdSe) are deposited throughsuccessive ionic layer adsorption and reaction (SILAR) technique. Thirtynanometers average size ZnO nanoparticles synthesized from solution areused as a source, resultant thickness starts from 200nm to 3 microns.Average size and crystal phase identification are done by XRD. Scanningelectron microscopy (SEM), UV-Vis, profilometer, and J–V are used todetermine morphology, elemental composition, transmittance, band gap,thickness, and efficiency of the solar cell, respectively. Characterization ofefficiency is carried out on different film thicknesses. A total efficiency of1.25% is obtained for a specific film thickness under 1.5 AM.