Abstract
Refractory titanium nitride (TiN) nanoellipsoid was proposed as unit component for metamaterial perfect absorber in visible frequencies. Combining both the intrinsic loss of the TiN material in short wavelength (<500 nm) and the plasmonic resonance absorption in long wavelength (>500 nm), the metamaterial perfect absorber based TiN nanoellipsoid array can be a broadband perfect absorber in whole visible region. An average absorbance of 98.5 % over the whole visible spectrum was obtained with a total thickness of only 200 nm. The structure is directly applicable to all kinds of opaque substrates with no need for metallic bottom.
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This work is conducted under the support of the Science Challenging Program (SCP) and the President Funding of China Academy of Engineering Physics (No. 2014-1-100).
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This article is part of the Topical Collection on Numerical Simulation of Optoelectronic Devices 2016.
Guest Edited by Yuh-Renn Wu, Weida Hu, Slawomir Sujecki, Silvano Donati, Matthias Auf der Maur and Mohamed Swillam.
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Chen, F., Li, Q., Li, M. et al. Simulation of perfect absorber at visible frequencies using TiN-based refractory plasmonic metamaterials. Opt Quant Electron 48, 498 (2016). https://doi.org/10.1007/s11082-016-0761-1
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DOI: https://doi.org/10.1007/s11082-016-0761-1