Menon, PS and Jamil, NA and Mei, GS and Zain, ARM and Hewak, DW and Huang, CC and Mohamed, MA and Majlis, BY and Mishra, RK and Raghavan, S and Bhat, N (2020) Multilayer CVD-Graphene and MoS ethanol sensing and characterization using kretschmann-based SPR. In: IEEE Journal of the Electron Devices Society, 8 . pp. 1227-1235.
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Abstract
The Kretschmann-based surface plasmon resonance (K-SPR) sensor was developed using multilayer graphene and molybdenum disulphide (MoS2) structures on a plasmonic gold (Au) layer for ethanol detection. In this configuration, the SPR spectra of minimum reflectance versus SPR angle was used to determine the sensitivity, detection accuracy and quality factor as the main figure of merit (FOM). Both graphene and MoS2 were used as hybrid detection layers to enhance the ethanol sensing performance using Finite Difference Time Domain (FDTD). The multilayer graphene/Au and MoS2/Au sensors gave a maximum sensitivity of 192.03°/RIU and 153.25°/RIU respectively at 785 nm optical wavelength. In terms of material characterization using the K-SPR technique, chemical vapor deposition (CVD)-grown graphene on Au, had a thickness of 1.17 nm with real and imaginary refractive indices of 2.85, 0.74, and 3.1, 1.19, respectively, at optical wavelengths of 670 nm and 785 nm. © 2013 IEEE.
| Item Type: | Journal Article |
|---|---|
| Publication: | IEEE Journal of the Electron Devices Society |
| Publisher: | Institute of Electrical and Electronics Engineers Inc. |
| Additional Information: | The copyright of this article belongs to Institute of Electrical and Electronics Engineers Inc. |
| Keywords: | Chemical vapor deposition; Ethanol; Finite difference time domain method; Gold compounds; Graphene; Layered semiconductors; Molybdenum compounds; Multilayers; Optical multilayers; Plasmons; Refractive index; Sulfur compounds, Chemical vapor depositions (CVD); Figure of merit (FOM); Finite -difference time domains (FDTD); Material characterizations; Maximum sensitivity; Molybdenum disulphide; Multilayer graphene; Optical wavelength, Surface plasmon resonance |
| Department/Centre: | Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering |
| Date Deposited: | 28 Dec 2020 11:12 |
| Last Modified: | 28 Dec 2020 11:12 |
| URI: | http://eprints.iisc.ac.in/id/eprint/67444 |
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