Predicting the electronic and mechanical properties of 2D diamond-like carbon and cubic boron nitride intercalated structures

Abstract

Two-dimensional (2D) diamond-like (Diam) carbon (C) and cubic boron nitride (cBN) with different interface atoms named as BCB, BCN and NCN are investigated by first principal studies. The calculations reveal that the CB bond may be the most energetically favored bonding configuration in the Diam/cBN epitaxy. The electronic properties can be tuned not only by different interfacial atoms, but also by varying the number of intermediate C-layers. The application of negative stress transforms the 2D Diam/cBN intercalated structures from a semiconductor to a metal. The Young's and shear module indicate prominent mechanical properties for these intercalated structures, in particular for BCN that can be compared to bulk. The predicted 2D Diam/cBN intercalated structures presented here show that the stacking order, the number of intermediate C-layers, and the use of strain-induced structures can open new avenues for the application of novel ultra-thin and ultra-tough electronic reserve material devices.