The Sb-doped AgIn5S8 films were grown on indium–tin–oxide substrates using chemical bath deposition.
The X-ray diffraction patterns of samples show the polycrystalline AgIn5S8 phase in these films.
With the molar ratio of Sb/Ag in the solution higher than 0.2, the conduction type of samples turns
into p-type. The thickness, energy band gaps, and carrier densities of these samples are in the range of
692–1119 nm, 1.71–1.73 eV and 5.75×1014 to 9.85×1014 cm−3, respectively. The maximum photocurrent
density of samples with external potential kept at 1.0V vs. an Ag/AgCl reference electrode was found to
be −2.73mA/cm2 under illumination using a 300 Xe lamp system.