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Step impedance resonator‐based tunable perfect metamaterial absorber with polarization insensitivity for solar cell applications
Author(s) -
Herold Victor Du John,
Dhavamani Jackuline Moni,
Janapala Doondi Kumar
Publication year - 2019
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21650
Subject(s) - materials science , optoelectronics , miniaturization , metamaterial absorber , dielectric , metamaterial , solar cell , absorption (acoustics) , resonator , electrical impedance , terahertz radiation , parametric statistics , optics , tunable metamaterials , electrical engineering , nanotechnology , physics , engineering , statistics , mathematics , composite material
In this work, a step impedance resonator (SIR)‐based structure is proposed to develop a compact tunable metamaterial (MTM)‐based perfect absorber for solar cell applications. This MTM absorber is able to improve the absorption over a wide range of visible frequency range from 550 to 650 THz. The absorption is high around the frequency 600 THz. The proposed model is designed based on SIR technique to achieve miniaturization. The parametric study of overall size of the proposed MTM absorber analyzed over the frequency range 430‐750 THz. The thickness of dielectric spacer, and top most layer (MTM Structure) illustrates the tunable characteristics of the proposed model. A complete comparative analysis of proposed model with different dielectric spacers like AlGaAs, InAs, GaAs, and AlAs are presented with the help of absorption (S 11 ) and transmission (S 12 ). The proposed model is suitable for high efficiency solar cell energy harvesting applications.