Near-infrared absorbers based on the heterostructures of two-dimensional materials

Applied Optics
Fatemeh Davoodi, Nosrat Granpayeh

Abstract

Although the conductance and dielectric function of graphene can be tuned by applying external voltage, the tunability is less than 3%. Hybridizing graphene with other two-dimensional transition metal dichalcogenides (TMDs) can improve the adjustability and tunability of the optical properties of graphene-based structures at near-infrared frequencies. In this paper, we theoretically compute the dielectric function of graphene-MoTe2-graphene and graphene-MoTe2-graphene heterostructures utilizing the quantum electrostatic heterostructure (QEH) model, which is an ab-initio method. Utilizing the QEH results, we propose a hyper crystal (HC) absorber at near-infrared frequencies. Hence, we use the transfer matrix method to investigate our proposed absorber analytically. Moreover, we simulate the graphene-TMD-graphene (G-TMD-G) absorbers by the numerical finite difference time domain method. The results of the numerical solution are consistent with those of the analytical method. Due to the dependency of the Fermi level of graphene on the direct bandgap of the TMDs, the dielectric function of the G-TMD-G heterostructure can be tuned and enhanced further by changing the number of TMD layers. Finally, we demonstrate that the full absorp...Continue Reading

References

Jul 20, 2005·Proceedings of the National Academy of Sciences of the United States of America·K S NovoselovA K Geim
Sep 17, 2010·Nanoscale·Rubén Mas-BallestéFélix Zamora
Oct 15, 2011·Advanced Materials·Minoru Osada, Takayoshi Sasaki
Nov 8, 2012·Nature Nanotechnology·Qing Hua WangMichael S Strano
Nov 29, 2012·Optics Express·Michele MidrioAntonio-Daniele Capobianco
Nov 29, 2012·Optics Express·Zhiwei ZhengShuangchun Wen
Jan 5, 2013·Chemical Reviews·Mingsheng XuHongzheng Chen
Mar 8, 2013·ACS Nano·Sheneve Z ButlerJoshua E Goldberger
Jul 16, 2013·Nature Materials·Wei YangGuangyu Zhang
Jul 28, 2013·Nature·A K Geim, I V Grigorieva
Mar 26, 2014·Optics Express·José CapmanyPascual Muñoz
May 3, 2014·Applied Optics·Joo-Yun JungDean P Neikirk
Jun 6, 2015·Nano Letters·Kirsten AndersenKristian S Thygesen
Oct 21, 2015·Optics Express·Leonid L DoskolovichDmitry A Bykov
Mar 15, 2016·Applied Optics·Run-Mei GaoJian-Quan Yao
Jun 9, 2016·Nano Letters·M KhorasaninejadF Capasso
Jul 15, 2016·Nature Communications·M MassicotteF H L Koppens
Nov 10, 2016·Applied Optics·Hao PengZhijun Liu
Apr 5, 2017·Applied Optics·Guangsheng DengZhiping Yin

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