Quantum dot (QD) sensitizer on the surface of TiO₂film: Effect of metal salt anions dissolved in chemical bath on the distribution density of SILAR-grown PbS QDs

A study was conducted to investigate the impact of quantum dot (QD) sensitizer on the surface of TiO₂ film in an effort to examine the effect of metal salt anions dissolved in chemical bath on the distribution density of successive ionic layer adsorption and reaction (SILAR) process is a representative chemical bath deposition (SILAR)-grown PbS QDs. The compact TiO₂ atomic force microscopy (AFM) imaging experiment was prepared by following a typical spray-pyrolyzed deposition by using a solution of titanium diisopropoxide bis(acetylacetonate) in ethanol. The PbS QD-sensitized electrodes prepared using acetate anions clearly became darker at a faster pace than those from nitrate anions under the same experimental conditions except for the counter anion of lead cation dissolved in the chemical bath.