phosphorene


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phosphorene

A single layer of "black" phosphorus that, due to its 2D structure and color, is similar to the graphene derived from graphite. An excellent semiconductor with less leakage than graphene, phosphorene is not as brittle as silicon. Expected to be used in electronic and optical systems, phosphorene was first isolated in 2014. See graphene and phosphor.
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Phosphorene could be layered like a Lego block in a stack with graphene or other thin materials to achieve distinct electronic properties.
Phosphorene was created by a Purdue University team led by electrical and computer engineering professor Piede Ye in 2014.
Ye's team made phosphorene in much the same way that Geim and Novoselov made the first graphene--by applying adhesive tape to bulk black phosphorus, a relatively stable form of phosphorus, which is ordinarily highly reactive, produced by heating white phosphorus at high pressures.
In addition to being one of the few of these materials to actually be created in the lab, phosphorene has drawn attention because black phosphorus has been known for decades to have a band gap, meaning that it requires some energy for an electron to jump from a bound state (the valence band) into a free state (the conduction band), where it can flow in an electrical current.