Phosphorus is a vital component of every organism and plays a key role, for example, in energy transfer in the body and within cell membranes, bones and teeth. Phosphorus is also special because it occurs in numerous different forms (allotropes). For example, there is the highly explosive, toxic white phosphorus, the more stable red phosphorus known from match heads, or the crystalline, semi-conducting black phosphorus. The latter has numerous applications in electronic devices.
