Boron phosphide

Boron phosphide (BP) (also referred to as boron monophosphide, to distinguish it from boron subphosphide, B12P2) is a chemical compound of boron and phosphorus. It is a semiconductor. Boron phosphide (BP) (also referred to as boron monophosphide, to distinguish it from boron subphosphide, B12P2) is a chemical compound of boron and phosphorus. It is a semiconductor. Crystals of boron phosphide were synthesized by Henri Moissan as early as in 1891. Pure BP is almost transparent, n-type crystals are orange-red whereas p-type ones are dark red. BP is not attacked by acids or boiling aqueous alkali water solutions. It is only attacked by molten alkalis. Some properties of BP are listed below: