Unveiling the Superiority of naphthylene over biphenylene in silicon carbide 2D Architectures

Abstract

In recent years, silicon carbide (SiC) has once again become a target of interest in the materials science community, this time with particular interest in two-dimensional materials, which have attracted attention due to their large surface area and infinitesimal volume. In this sense, this study introduces a novel SiC structure based on the recently reported naphthylene lattice, termed INP-SiC. It compares its electronic, mechanical and vibrational properties with the well-reported biphenylene-like SiC (BPN-SiC) via density functional theory (DFT) simulations. Both monolayers are stable at 300 K and exhibit high electron mobility, with INP-SiC reaching 94.890 10² cm²/V.s. INP-SiC also shows superior mechanical robustness, with Young’s modulus (171.65 N/m) comparable to g-SiC (178.02 N/m) and T-SiC (182.22 N/m). Overall, this work is dedicated to showing the INP-SiC potential as a multifunctional 2D platform.