| Abstract: | p-Sm2S3 films were electrosynthesised from aqueous 0.05 M Sm2O3−0.05 M Na2S2O3−0.25 M tartaric acid bath onto Ti and stainless steel coated substrates. The films were characterized using optical absorption, X-ray diffraction, optical microscopy and chemical analysis. X-ray diffraction showed that films are microcrystalline and free from elemental Sm andS. Optical absorption studies showed that the bandgap is 2.08 eV. (Photo)electrochemical studies of the films were carried out by forming a p-Sm2S3/KI---I2---2KCl/C cell configuration.The current-voltage characteristics were studied in the dark and under white light illumination and at different temperatures. The capacitance-voltage characteristics were studied at 1 kHz frequency. The type of material, junction quality factor, barrier height, flat band potential, etc., were estimated. |
