A Cubic and monolayer difference

[Mohammad-gl]

TL;DR Summary

Difference between cubic and monolayer

What is the difference for example between cubic boron phosphide and monolayer boron phosphide?

 

[Baluncore]

What are you using them for; hard cutting tool surface, as a semiconductor, or as a catalyst?

There are two forms;

Cubic (F-43m) BP and rhombohedral (R-3m) B₁₂P₂ boron phosphides are refractory (melting temperatures at ambient pressure are 2840 K [1] and 2390 K [2]) and low-compressible (300-K bulk moduli are 174 GPa [3] and 192 GPa [4]) wide bandgap semiconductors that have attracted considerable attention due to their superior physical properties.

https://hal.archives-ouvertes.fr/hal-02131914/document

 

[Mohammad-gl]

What are you using them for; hard cutting tool surface, as a semiconductor, or as a catalyst?

There are two forms;

https://hal.archives-ouvertes.fr/hal-02131914/document

Thank you.
I want to know, for example, is the Gruneisen parameter of the cubic BP equal to monolayer BP?

 

[Mohammad-gl]

Thank you.
I want to know, for example, is the Gruneisen parameter of the cubic BP equal to monolayer BP?

I'm using it as a semiconductor.

 

[TeethWhitener]

No, monolayer boron phosphide adopts a hexagonal structure analogous to single layer boron nitride or graphene.

 

[f95toli]

Note also that "monolayer" does not imply an ordered structure; it typically just means that you have a surface covered with one layer of atoms or molecules. If you have a 2D material then this structure might indeed be ordered, but in general this is not the case because where the atoms/molecules end up strongly depends on the surface they are sitting on (plus lots of other factors such as temperature etc).
You frequently also see people use expressions such as "0.5 ML" which simply means that on average half the surface is covered.