The element phosphorus can exist in different allotropes and modifies its characteristics with each new type. So far, violet, red, black, and white phosphorus have been recognized. While some compounds of phosphorus are important for life, white phosphorus is inflammable & poisonous and black phosphorus (in contrast) specifically robust.
Now, one more allotrope has been verified. In 2014, a group from Michigan State University conducted model measurements to forecast that “blue phosphorus” must also be stable. The phosphorus atoms in this form arrange themselves in a honeycomb structure analogous to graphene. On the other hand, they are not completely flat but frequently “buckled.” Model measurements displayed that blue phosphorus is not a narrow gap semiconductor similar to black phosphorus in the bulk. Instead, it has the characteristics of a semiconductor with a rather huge 2 Electron Volts band gap. This huge gap, which is 7 times bigger in comparison to bulk black phosphorus, is essential for optoelectronic use cases.
On a similar note, as researchers carry on to hunt for a substance that will make it achievable to bundle more transistors on a processor, new study from Université de Montréal and McGill University adds to proof that black phosphorus can surface as a sturdy candidate.
In a research posted in Nature Communications, the scientists claim that when electrons shift in a phosphorus transistor, they perform this action in only 2 dimensions. The result recommends that black phosphorus can assist engineers surmount one of the big hurdles for future electronics—developing energy-competent transistors.
“Transistors work more professionally when they are slim, with electrons shifting in only 2 dimensions,” claimed senior author of the new study and associate professor in McGill’s Department of Electrical and Computer Engineering, Thomas Szkopek, to the media in an interview. “Nothing gets slimmer than a single coating of atoms,” he further claimed.