Gas Sensing Properties of single-material SnP3 logical junction via Negative Differential Resistance: Theoretical Study

TL;DR

This theoretical study investigates SnP3, a 2D material, for gas sensing applications, demonstrating its potential to detect NO gas through negative differential resistance in a single-material junction.

Contribution

The paper introduces a novel application of SnP3 as a gas sensor utilizing negative differential resistance, based on quantum-mechanical simulations.

Findings

SnP3 exhibits semiconducting and metallic layers suitable for junctions.

Gases physically adsorb with charge transfer, enabling detection.

Calculated I-V characteristics suggest effective NO gas sensing.

Abstract

The field of 2D materials has gained a lot of attention for vast range of applications. Amongst others, the sensing ability towards harmful gases is the application, which we explored in the present work using quantum-mechanical simulations for the SnP3 material. Its electronic properties, namely 1 and 2 layers being semiconducting, while multilayers being metallic, offer a possibility to build a single-material logical junction. In addition, the harmful gases studied here show physical adsorption with charge transfer from the substrate to the gas molecules. Calculated recovery times show promise of a good sensing material. The I-V characteristics calculated for all cases indicates that SnP3 could be a viable sensing material towards NO gas via negative differential resistance.