Performance analysis of surface plasmon resonance sensors using bimetallic alloy-perovskite-bimetallic alloy and perovskite-bimetallic alloy-perovskite nanostructures

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Performance analysis of surface plasmon resonance sensors using bimetallic alloy-perovskite-bimetallic alloy and perovskite-bimetallic alloy-perovskite nanostructures
Abdelhak Dhibi, Jabir Hakami and Amel Abassi

Published 30 March 2021 • © 2021 IOP Publishing Ltd
Physica Scripta, Volume 96, Number 6
Citation Abdelhak Dhibi et al 2021 Phys. Scr. 96 065505
DOI 10.1088/1402-4896/abf067

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Abstract
In this paper, four SPR sensors have been proposed and analyzed theoretically. The proposed SPR sensors are prism—Au-Ag alloy—CH3NH3PbI3—Au-Ag alloy—graphene—sensing medium, prism—Au-Al alloy—CH3NH3PbI3—Au-Al alloy—graphene—sensing medium, prism—CH3NH3PbI3—Au-Ag alloy—CH3NH3PbI3—graphene—sensing medium and prism—CH3NH3PbI3—Au-Al alloy—CH3NH3PbI3—graphene—sensing medium. Matrix method for N-layer model has been utilized to analysis the performance parameters of the proposed sensors. The performance parameters were determined in terms of the detection accuracy (DA), sensitivity, and figure of Merit (FoM). The thicknesses of bimetallic alloy and CH3NH3PbI3 layers and bimetallic alloy composition have been optimized to achieve the best performance of the sensors. It is found that the best detection accuracy, sensitivity and figure of Merit of the proposed sensors are 0.279 deg−1, 85.2 deg/RIU and 23.79 RIU−1 for configuration I; 0.414 deg−1, 77.2 deg/RIU and 32.03 RIU−1 for configuration II; 0.120 deg−1, 106.60 deg/RIU and 12.81 RIU−1 for configuration III; and 0.186 deg−1, 93 deg/RIU and 17.35 RIU−1 for configuration IV.