Mechanical effects on the electro-optical properties of silicon-carbon nanotube based metamaterials for photoabsorber applications

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2020-9

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Ördek, Barış

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The use of metamaterial (MTM) technology has been popular recently due to having extensive range of applications and being a promising field of interest. MTMs are commonly used in medical, energy, and military fields. Solar photovoltaics (PV) is one of the fields that MTMs are used in order to increase the generated energy. In this thesis, three silicon-carbon nanotube (Si-CNT) based MTM absorbers are proposed and the effect of mechanical bending stresses on the electro-optical properties of three proposed designs are investigated within the frequency range of 400 THz to 1200 THz (Visible and Ultraviolet). The proposed absorbers consist of three layers, namely: resonators, substrate, and ground plate. The resonators and ground plate are made of aluminum whereas the substrate is made of silicon-carbon nanotube composite with 5% CNT. According to the simulation results, at least 72% of solar radiation is absorbed among three absorbers. Moreover, resonance frequency shifts, dual-band frequency response, and increase in absorption rates are observed when bending deformations are applied to the proposed absorbers.

Subject Keywords

Metamaterials, Carbon Nanotube, Finite Integration Technique, Resonance Shifts, Composite, Bending Moment

URI

https://hdl.handle.net/11511/69723

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Northern Cyprus Campus, Thesis

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Citation Formats

B. Ördek, “Mechanical effects on the electro-optical properties of silicon-carbon nanotube based metamaterials for photoabsorber applications,” M.S. - Master of Science, Middle East Technical University, 2020.