# Carbon Monosulfide Nanostructures: Chains Arrays, Monolayers, and Thin Films

## TL;DR

This paper reports the first experimental synthesis of various layered nanostructures of carbon monosulfide, revealing their stability, electronic properties, and phase transition potential under strain, advancing nanomaterials research.

## Contribution

It demonstrates for the first time the synthesis and characterization of layered carbon monosulfide nanostructures including chains, monolayers, and thin films, with insights into their stability and electronic phases.

## Key findings

- Chains arrays are the most stable due to $sp^2$ hybridization.
- Chains arrays are direct gap semiconductors.
- Strain can induce a semiconductor-to-metal transition in monolayers.

## Abstract

Theoretical predictions have lead to the experimental synthesis of new low dimensional layered structures. Herein we show for the very first time that compounds of carbon monosulfide exhibit a great variety of layered nanostructures, such as chains arrays, monolayers, and thin films. We find that the chains arrays are the most stable because they are mainly dimensionality-driven by the $sp^2$ hybridization of sulfur and carbon orbitals. Furthermore, the chains arrays are direct gap semiconductors. In contrast to thin films, the monolayers are stable at room temperature with a semiconductor phase followed in energy by a metallic phase. Then, we achieve a semiconductor-to-metal phase transition in carbon sulfur monolayers, which can be driven by strain engineering controlling conductivity and carrier mobility.