1Department of Physics, Josip Juraj Strossmayer University of Osijek, Trg Ljudevita Gaja 6, Osijek 31000, Croatia
2Department of Physics and Electronics, St. Xavier’s College, Ahmedabad 380009, India
Adv. Mater. Lett., 2019, 10 (4), pp 270-274
DOI: 10.5185/amlett.2019.2220
Publication Date (Web): Jan 10, 2019
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E-mail: ilukacevic@fizika.unios.hr
Optical properties of 2D materials can be effectively modulated by employing multilayer structures with different number of layers. Using the theoretical approach based on density functional theory we simulated relevant optical spectra of antimony and indium mono- and multilayers. We showed that the electronic band structures of antimonene and indiene possess numerous tracking bands enhancing the transition probability. Therefore, high absorption coefficients are found. Modelled multilayer nanostructures of antimonene and indiene experience a red-shift of absorption bands. Antimonene exhibits an optical directional anisotropy regarding the absorbance coefficient and reflectance spectrum for different nanolayer thicknesses. Indiene possesses very high reflectance and refractive index in the visible and IR spectrum which can be effectively modulated by the number of layers. Our work shows that antimonene and indiene multilayers harbour untapped potential for the optical applications at the nanoscale.
2D materials, antimony, indium, optical properties, density functional theory.
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