Platinum Ditelluride based Field Effect Transistors for highly sensitive H2S sensing

TL;DR

This paper explores the use of platinum ditelluride (PtTe2) FETs, functionalized with Au-Pd, for highly sensitive and selective real-time detection of H2S gas, demonstrating its potential in toxic gas sensing applications.

Contribution

It introduces a novel PtTe2-based FET sensor functionalized with Au-Pd for enhanced H2S detection, highlighting its ultrasensitivity and selectivity.

Findings

PtTe2 FETs show high sensitivity to H2S gas.

Au-Pd functionalization improves selectivity.

Potential for real-time toxic gas sensing.

Abstract

Two-dimensional materials, specifically transition metal dichalcogenides, for highly sensitive gas sensing are emerging as effective detection technology. Platinum ditelluride (PtTe2) is an intriguing material in the realm of field-effect transistors (FETs) due to its unique electronic properties. In this study, the CVDsynthesized PtTe2 was functionalized with Au-Pd thin film for analyte-specific (H2S) sensing for better toxic gas sensitivity and selectivity. It was concluded that PtTe2, in combination with appropriate metal or oxide decorations, had great potential for ultrasensitive and selective, real-time gas sensor applications.