Abstract
Surface plasmon resonance (SPR) sensor based on the blue phosphorene/MoS2 hetero-structure is presented to enhance the performance parameters, i.e., sensitivity, detection accuracy, and quality factor. The blue phosphorene/MoS2 hetero-structure works as an interacting layer with the analyte for the enhancement of the sensitivity of the sensor. It is observed that the sensitivity of blue phosphorene/MoS2 based sensor (i.e., structure-II) is improved by 5.75%, from the conventional sensor (i.e., structure-III). Further, an additional silicon nanolayer is introduced between the metal layer and blue phosphorene/MoS2 hetero-structure. The sensitivity of the proposed blue phosphorene/MoS2 hetero-structure with a silicon layer SPR sensor, i.e., structure-I, is enhanced by 44.76% from structure-II and 55.75% from structure-III due to an enhancement in the evanescent field near the metal-analyte interface. Finally, it is observed that at the optimum thickness of silicon between the gold layer and blue phosphorene/MoS2, performance parameters of the sensor are enhanced.
Highlights
Surface plasmon resonance (SPR) sensors have garnered attention owing to their unbeatable properties like high sensitivity, fast response, real-time detection, ability to detect a very minute change in sensing layer refractive index, and label-free detection [1, 2]
To obtain the SPR condition, the wave vector of incident light must match the wave vector of an surface plasmons waves (SPW), and the reflectance dip is observed at SPR condition in the reflectance curve due to attenuated total reflection (ATR)
It is seen that the inclusion of blue phosphorene (blue P)/MoS2 hetero-structure and silicon layer increases the value of δ0.5 due to the damping of the surface plasmon [8, 10, 16]
Summary
Surface plasmon resonance (SPR) sensors have garnered attention owing to their unbeatable properties like high sensitivity, fast response, real-time detection, ability to detect a very minute change in sensing layer refractive index, and label-free detection [1, 2]. These properties make them useful in the area of medical, health, biosensing application, drug analysis, etc. The sensing performance of the SPR sensor can be obtained from the reflectance curve. Graphene has been used as a bio-recognition element (BRE) because it increases
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
