High Sensitivity in Ni-Based SPR Sensor of Blue Phosphorene/Transition Metal Dichalcogenides Hybrid Nanostructure

In the present work, a novel surface plasmon resonance (SPR) sensor consisting of the nickel (Ni) film with hybrid structure of blue phosphorene (BlueP)/transition metal dichalcogenides (TMDCs) is reported. By optimizing the thickness of Ni layer and BlueP/TMDCs, the maximum sensitivity with 270 degrees/RIU for the Ni-BlueP/WS2 is achieved. Use of BlueP/TMDCs layer facilitates the sensitivity due to its high electron concentration, high mobility, optical, and electronic properties. Compared with the conventional Ni-based SPR sensor, the sensitivity of the proposed one is enhanced up to similar to 60.7%. We hope that the SPR sensor has potential application prospects in chemical detection, medical diagnostic, optical sensing, etc. due to its high sensitivity.

Automated summary

A novel surface plasmon resonance (SPR) sensor using a nickel film with a hybrid structure of blue phosphorene (BlueP) and transition metal dichalcogenides (TMDCs) was reported, achieving high sensitivity. The use of BlueP/TMDCs layer increased the sensor sensitivity by approximately 60.7%, showing potential application prospects in various fields such as chemical detection and medical diagnostics.