Bismuth Iodide

Bismuth Iodide powder is a compound powder consisting of bismuth (Bi) and iodide (I), usually yellow to orange in colour, which may have potential applications in the fields of optoelectronic devices, chemical synthesis, and pharmaceuticals.

Properties

Chemical formula: BiI₃.

Molecular weight: 589.69 g/mol

CAS No.: 7787-64-6

EINECS No.: 232-127-4

Appearance: Bismuth Iodide powder is grey-black crystal or powder with metallic luster, which turns into bismuth oxyiodide in air after long time.

Density: 5.78 g/cm³(25℃)

Melting point: 408.6°C

Boiling point: 542°C

Solubility: Bismuth Iodide is soluble in anhydrous ethanol, hydrochloric acid, hydriodic acid and potassium iodide solution, almost insoluble in cold water, slowly decomposed in hot water

Stability: Bismuth Iodide has sublimation; slightly soluble in ethanol, benzene and toluene.

Crystal structure: tripartite crystal system (trigonal, hr24)

Magnetisation: -200.5×10-⁶ cm³/mol.

APPLICATIONS

Solar cell field:
Light Absorbing Layer Material: Bismuth Iodide can be used as an important component in the preparation of light absorbing layer in calcite-type solar cells. Its unique photoelectric properties help to improve the photoelectric conversion efficiency of the battery, and it is more environmentally friendly compared with lead-based materials, which helps to solve the environmental pollution and stability problems of traditional lead-based chalcogenide batteries.

Improvement of crystallinity: In the preparation of chalcogenide layer, combining it with other materials can improve the crystallinity of chalcogenide, making the surface of the film denser, which is conducive to the transmission of carriers, and thus enhance the performance of the battery.

Semiconductor field: Bismuth iodide is a semiconductor material that can be used to make electronic devices such as transistors and sensors.
Optoelectronics: Due to its ability to convert light and electricity, it can be applied to the development of optoelectronic devices, such as light-emitting diodes (LEDs) and photodetectors.

Medical imaging: Bismuth iodide is used as a contrast agent in some medical imaging applications, especially in X-ray imaging systems. Its high atomic number and excellent X-ray absorption properties can enhance the contrast of imaging and help doctors diagnose diseases more accurately.

Radiation shielding: Its high atomic number makes it an effective radiation shielding material, and it can be applied in places with high requirements for radiation protection, such as nuclear power plants, medical facilities and aerospace technology.

Chemical reagent: Bismuth Iodide can be used as a chemical reagent in a variety of chemical processes, including organic synthesis and catalytic reactions. It can participate in specific chemical reactions and promote the synthesis of compounds.

Analytical reagents: Bismuth Iodide is used for the detection of palladium, alkaloids or other bases.