Ws2-Ch3nh3pbi3 Perovskite Nanostructure Based Bimetallic Surface Plasmon Resonance Biosensor with High Sensitivity and High Resolution
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Date
2019
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2021 Joint 8th International Conference on Informatics, Electronics and Vision, ICIEV 2019 and 3rd International Conference on Imaging, Vision and Pattern Recognition, icIVPR 2019 with International Conference on Activity and Behavior Computing, ABC 2019
Abstract
In this paper, we proposed a high sensitivity and high resolution surface plasmon resonance biosensor based on WS2 nanomaterial, methylammonium lead iodide (MAPbI3)perovskite nanosheet and Au-Ag bimetallic film. The structure is based on Kretschmann configuration with six layers. Our proposed sensor can behave linearly upto 0.02 RIU change in sensing medium. The highest sensitivity was calculated as 195 (Deg/RIU) with full width at half maximum (FWHM) of 7.6 Deg. We also proposed another structure to get higher resolution of 6.3 Deg FWHM with a sensitivity of 187.5 (Deg/RIU). Both of our proposed designs are far superior in responsivity and sensitivity to pure Au based biosensors.
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Keywords
Nanostructure, Surface plasmon resonance, Biosensor