Abstract
In this paper a graphene–MoS2 hybrid structure based surface plasmon resonance biosensor is presented. The performance parameters of the proposed sensor are defined in terms of sensitivity, detection accuracy and quality factor. By the addition of hybrid graphene–MoS2 layer the sensitivity is enhanced but the quality factor and detection accuracy is decreased. Hence to increase the quality factor and detection accuracy a silicon layer is included between metal and MoS2 layer. It is observed that the full width at half maximum of reflectance curve is minimized up to great extent with little decrement in the sensitivity due to the inclusion of silicon layer. Furthermore in this paper, the effect of increasing the number of layers of graphene and MoS2 is also analyzed.
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The present work is partially supported by the department of science and Technology (DST), New Delhi, India under the fast track young scientist Scheme No. SB/FTP/ETA/0478/2012.
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Maurya, J.B., Prajapati, Y.K., Singh, V. et al. Performance of graphene–MoS2 based surface plasmon resonance sensor using Silicon layer. Opt Quant Electron 47, 3599–3611 (2015). https://doi.org/10.1007/s11082-015-0233-z
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DOI: https://doi.org/10.1007/s11082-015-0233-z