Chemical surface growth and physical properties of the Au nanoparticles array on glass slides

Gold nanoparticle array on pretreated glass substrates was fabricated by chemical surface growth from the AuCl₃, CH₂O and Na₂CO₃ components in aqueous solutions mixture. Transmission, absorption and reflectivity spectra were measured with an UV-Vis spectrophotometer. A change in plasmon maximum absorption position depending on the growth conditions was investigated. The surface morphology was studied by atomic force microscopy. The statistical analysis of the heights, particles diameter and image cross-sections was carried out by scanning probe microscopy methods and the Au NPs size dependence on the growth time was experimentally determined. The results of this paper will contribute to the optimization of plasmonic CdS/CdTe solar cell.