Arsenic Diphosphide

Arsenic diphosphide is a chemical compound composed of arsenic and phosphorus with the chemical formula AsP2. It is a crystalline solid with a dark gray color and a metallic luster. The crystal structure of arsenic diphosphide is similar to that of zinc blende, which consists of two interpenetrating face-centered cubic lattices.

Arsenic diphosphide is a semiconductor material with a narrow bandgap of approximately 0.5 eV, making it suitable for use in infrared detectors and other optoelectronic devices. It also exhibits high electron mobility and can be used as a substrate material for growing epitaxial layers of other semiconductors.

The synthesis of arsenic diphosphide typically involves the reaction of arsenic and phosphorus in a sealed ampoule at high temperatures (700-900°C) under vacuum or a flow of inert gas such as argon. The resulting product is then purified using techniques such as zone refining or chemical vapor transport.

Arsenic diphosphide is toxic and can pose a health hazard if not handled properly. It should be stored and handled in a well-ventilated area with appropriate protective equipment such as gloves and a respirator. Disposal of arsenic diphosphide should be done in accordance with applicable regulations and guidelines.