Design of structures including MoS2 monolayer with low absorption at THz range for application in transparent electrodes

Document Type : Full length research Paper

Authors

Department of Physics, Alzahra University, Tehran,iran

Abstract

Two dimensional Molybdenum disulfide, MoS2, crystal has attracted intense attention for its application in the THz optoelectronics and can be used for transparent electrode in the nanoscale research area. In this paper, we design structures including MoS2 monolayer on different substrates and different layer positions in one-dimensional photonic crystals (1DPCs) toward decreasing the optical absorption and increasing the optical transmission. The THz refractive index of MoS2 taken from Drude model is calculated. Transmission and absorption spectra in the THz range for either of TE or TM modes is calculated based on the transfer matrix method (TMM). In continue we show that the absorption spectrum can be tuned by changing different materials and incident angles for either of TE or TM modes. We finally in our best design achieved absorption smaller than MoS2 monolayer and nearly 100% transmission. Such results are useful for application in nano-bulding blocks including transparent electrode in future photonics and electronics devices.

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References

 
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Journal of Research on Many-body Systems
Volume 8, Issue 16
June 2018
Pages 13-20

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History

  • Receive Date: 22 April 2017
  • Revise Date: 23 September 2017
  • Accept Date: 23 October 2017

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