First-principles study of two dimensional C₃N and its derivatives.

ABSTRACT: Here we have performed a comprehensive first-principles study for electronic and mechanical properties of newly synthesized C₃N and its derivatives. The C₃N monolayer is evaluated to be an indirect semiconductor with a HSE06 level bandgap of 1.09 eV, which can be effectively tuned by the number of layers, stacking order and B-doping concentration. With strong polar covalent bonds, C₃N is predicted to be a superior stiff material with high in-plane Young's modulus (1090.0 GPa) and thermal dynamic stability (up to 2000 K). Remarkably, the C₃N monolayer possesses a fascinating bending Poisson's effect, namely, bending induced lateral contraction, which is rare in other 2D materials. What's more, C₃N nanosheets can be rolled into nanotubes

SUBMITTER: Chen Z 

PROVIDER: S-EPMC9056723 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature