Blue phosphorus - a new two-dimensional material graphene is able to press
Invented at the dawn of the 21st century, graphene has found its application in many fields of science and technology. And even gave scientists studying it, the Nobel Prize. However, two-dimensional structure such as this carbonaceous material was predicted for the other elements of the periodic system of chemical elements and quite unusual properties of one of these substances has recently succeeded study. And it called this substance "blue phosphor".
Phosphorus is generally pretty interesting chemical element. It has several forms called allotropic modifications. It has been known 4 forms under the names white, red, violet and black phosphorus differing crystal lattice structure. A few years ago, scientists predicted that the possible existence and 5 shapes, but could only recently prove its existence and study some properties.
As the edition New Atlas, a group of researchers from Helmholtz-Zentrum Berlin placing phosphorus modification on a substrate made of gold found phosphor structure very similar in structure to graphite.
In the structure of the blue phosphorus atoms have a "honeycomb" structure as graphene, but a little "act" above the surface of the substrate due to the presence of gold Features of the structure of the material and provide a fairly unique property to him. Already mentioned above, black phosphorus has a relatively good conductivity, and some researchers have predicted his position in the electronics of the "new silicon", but having studied the blue phosphor was found out that it is much better may be suitable for this purpose.
Applying the angle-resolved photoemission spectroscopy, researchers have measured the level of electron distribution through the crystal lattice and found that it has the potential energy in the electron volt 2, which is 7 times higher than that of black phosphorus. According to the author of the work of Oliver Rader,
"Until now, researchers have mainly used the voluminous black phosphorus for the manufacture of thin atomic layers. Our work indicates not only on the properties of the new two-dimensional phosphorus modification, but also emphasizes the influence of the support substrate on the behavior of electrons in a blue phosphor that is an important parameter for applications in optoelectronics. "
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