Bismuth(III) sulfide (Bi 2S 3) is a bismuth and sulfur chemical compound. It occurs in nature as the mineral bismuthinite. Bismuth sulfide belongs to group 15 post-transition metal tri chalcogenides. Two irreversible and exothermic transitions are observed at around 210 and 253°C in the DSC thermograms of bismuth sulfide powder. They correspond to the crystallization of Bi2S3, followed by the decomposition of bismuth- and sulfur-rich sulfides and the subsequent formation of Bi2S3. The endotherm observed at 255°C has been identified with the growth of a bismuth-rich eutectic phase. Its dependence on high temperatures is due to the need for sulfur loss. Ultralong nanoribbons with lengths of up to millimeters can be obtained on a large scale via a solvothermal process using a mixture of aqueous NaOH solution in glycerol. Ultrathin corrugated nanosheets can also be achieved using a hydrazine salt-based liquid phase exfoliation process. Bi2S3 is a direct bandgap semiconducting with a bandgap of 1.3 eV and a large absorption coefficient 105 cm-1. To investigate the effect of annealing temperature and pressure on the properties of bismuth sulfide films deposited from a chemical bath, in this article, we report the results of dynamic and isothermal treatments studied under different pressures. The isotherms were chosen in a temperature range close to the amorphous–crystalline transition temperature. The structural characterization of these films is reported, along with the electrical characterization. We also report the reactions on the abundant powder (chemical bath precipitate) in inert environments and studied by differential scanning calorimetry (DSC). The correlation between the structural and thermal characterization of the powder with the structure and electrical properties of annealed thin films will help determine the reactions taking place and the annealing parameters rendering highly conductive single-phase, Bi2S3 systems. If you are looking for high quality, high purity and cost-effective Bi2S3, or if you require the latest price of Bi2S3, please feel free to email contact mis-asia.