Graphene–Ti3C2Tx MXene hybrid nanostructure: a promising material for sensitivity enhancement in plasmonic sensor

Abstract

MXene has emerged as a promising material for various optoelectronics applications. In view of the advanced properties of MXene, surface plasmon resonance (SPR)-based sensor utilising graphene–Ti3C2Tx MXene hybrid nanostructure is proposed for sensitivity enhancement. The sensor’s performance is theoretically demonstrated in terms of sensitivity and detection accuracy at incident light wavelength of 633 nm for a broad analyte refractive index (RI) range (1.33–1.36). Further, the effect of increasing Ti3C2Tx MXene layers on the sensitivity is analysed. In addition, a significantly high average sensitivity is demonstrated at 532 nm for analyte RI in the vicinity of 1.32. This work will open new possibilities for graphene–Ti3C2Tx MXene-based hybrid nanostructures in SPR-based bio- and gas-sensors. © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH, DE part of Springer Nature.